Home / 29,688.38-40,970.31-18,516.86

Finding the Fourth Proportional to 29,688.38, 40,970.31 and 18,516.86

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Solution

The fourth proportional to 29,688.38, 40,970.31 and 18,516.86 is: 25,553.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,688.38 : 40,970.31 = 18,516.86 : x
  2. Step 2: Convert to fraction form
    29,688.38/40,970.31 = 18,516.86/x
  3. Step 3: Cross multiply
    29,688.38x = 40,970.31 × 18,516.86
  4. Step 4: Simplify right side
    29,688.38x = 758,641,494.43
  5. Step 5: Solve for x
    x = 758,641,494.43/29,688.38
  6. Step 6: Final answer
    x = 25,553.48

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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.