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Finding the Fourth Proportional to 29,155.28, 43,726.44 and 8,380.40

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Solution

The fourth proportional to 29,155.28, 43,726.44 and 8,380.40 is: 12,568.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,155.28 : 43,726.44 = 8,380.40 : x
  2. Step 2: Convert to fraction form
    29,155.28/43,726.44 = 8,380.40/x
  3. Step 3: Cross multiply
    29,155.28x = 43,726.44 × 8,380.40
  4. Step 4: Simplify right side
    29,155.28x = 366,445,057.78
  5. Step 5: Solve for x
    x = 366,445,057.78/29,155.28
  6. Step 6: Final answer
    x = 12,568.74

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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.