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Finding the Fourth Proportional to 19,616.76, 29,429.78 and 15,629.29

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Solution

The fourth proportional to 19,616.76, 29,429.78 and 15,629.29 is: 23,447.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,616.76 : 29,429.78 = 15,629.29 : x
  2. Step 2: Convert to fraction form
    19,616.76/29,429.78 = 15,629.29/x
  3. Step 3: Cross multiply
    19,616.76x = 29,429.78 × 15,629.29
  4. Step 4: Simplify right side
    19,616.76x = 459,966,414.54
  5. Step 5: Solve for x
    x = 459,966,414.54/19,616.76
  6. Step 6: Final answer
    x = 23,447.62

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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.