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Finding the Fourth Proportional to 11,374.29, 15,696.63 and 6,658.74

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Solution

The fourth proportional to 11,374.29, 15,696.63 and 6,658.74 is: 9,189.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,374.29 : 15,696.63 = 6,658.74 : x
  2. Step 2: Convert to fraction form
    11,374.29/15,696.63 = 6,658.74/x
  3. Step 3: Cross multiply
    11,374.29x = 15,696.63 × 6,658.74
  4. Step 4: Simplify right side
    11,374.29x = 104,519,778.05
  5. Step 5: Solve for x
    x = 104,519,778.05/11,374.29
  6. Step 6: Final answer
    x = 9,189.13

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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.