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Finding the Fourth Proportional to 12,283.78, 16,950.75 and 7,247.74

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Solution

The fourth proportional to 12,283.78, 16,950.75 and 7,247.74 is: 10,001.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,283.78 : 16,950.75 = 7,247.74 : x
  2. Step 2: Convert to fraction form
    12,283.78/16,950.75 = 7,247.74/x
  3. Step 3: Cross multiply
    12,283.78x = 16,950.75 × 7,247.74
  4. Step 4: Simplify right side
    12,283.78x = 122,854,628.81
  5. Step 5: Solve for x
    x = 122,854,628.81/12,283.78
  6. Step 6: Final answer
    x = 10,001.37

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Find fourth proportional to 6,141.89, 8,475.38 and 3,623.87
Half scale
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Double scale
Find fourth proportional to 12,284.78, 16,952.13 and 7,248.74
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.