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Finding the Fourth Proportional to 19,398.71, 29,112.71 and 15,549.59

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Solution

The fourth proportional to 19,398.71, 29,112.71 and 15,549.59 is: 23,336.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,398.71 : 29,112.71 = 15,549.59 : x
  2. Step 2: Convert to fraction form
    19,398.71/29,112.71 = 15,549.59/x
  3. Step 3: Cross multiply
    19,398.71x = 29,112.71 × 15,549.59
  4. Step 4: Simplify right side
    19,398.71x = 452,690,480.98
  5. Step 5: Solve for x
    x = 452,690,480.98/19,398.71
  6. Step 6: Final answer
    x = 23,336.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.