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Finding the Fourth Proportional to 11,143.11, 15,368.37 and 7,950.76

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Solution

The fourth proportional to 11,143.11, 15,368.37 and 7,950.76 is: 10,965.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,143.11 : 15,368.37 = 7,950.76 : x
  2. Step 2: Convert to fraction form
    11,143.11/15,368.37 = 7,950.76/x
  3. Step 3: Cross multiply
    11,143.11x = 15,368.37 × 7,950.76
  4. Step 4: Simplify right side
    11,143.11x = 122,190,221.46
  5. Step 5: Solve for x
    x = 122,190,221.46/11,143.11
  6. Step 6: Final answer
    x = 10,965.54

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Half scale
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Double scale
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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.