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Finding the Fourth Proportional to 29,264.64, 40,385.07 and 15,836.13

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Solution

The fourth proportional to 29,264.64, 40,385.07 and 15,836.13 is: 21,853.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,264.64 : 40,385.07 = 15,836.13 : x
  2. Step 2: Convert to fraction form
    29,264.64/40,385.07 = 15,836.13/x
  3. Step 3: Cross multiply
    29,264.64x = 40,385.07 × 15,836.13
  4. Step 4: Simplify right side
    29,264.64x = 639,543,218.58
  5. Step 5: Solve for x
    x = 639,543,218.58/29,264.64
  6. Step 6: Final answer
    x = 21,853.79

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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.