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Finding the Fourth Proportional to 29,296.47, 40,429.02 and 15,867.66

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Solution

The fourth proportional to 29,296.47, 40,429.02 and 15,867.66 is: 21,897.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,296.47 : 40,429.02 = 15,867.66 : x
  2. Step 2: Convert to fraction form
    29,296.47/40,429.02 = 15,867.66/x
  3. Step 3: Cross multiply
    29,296.47x = 40,429.02 × 15,867.66
  4. Step 4: Simplify right side
    29,296.47x = 641,513,943.49
  5. Step 5: Solve for x
    x = 641,513,943.49/29,296.47
  6. Step 6: Final answer
    x = 21,897.31

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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.