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Finding the Fourth Proportional to 29,296.95, 40,429.89 and 15,868.17

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Solution

The fourth proportional to 29,296.95, 40,429.89 and 15,868.17 is: 21,898.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,296.95 : 40,429.89 = 15,868.17 : x
  2. Step 2: Convert to fraction form
    29,296.95/40,429.89 = 15,868.17/x
  3. Step 3: Cross multiply
    29,296.95x = 40,429.89 × 15,868.17
  4. Step 4: Simplify right side
    29,296.95x = 641,548,367.60
  5. Step 5: Solve for x
    x = 641,548,367.60/29,296.95
  6. Step 6: Final answer
    x = 21,898.13

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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.