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Finding the Fourth Proportional to 29,362.87, 40,520.87 and 15,934.12

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Solution

The fourth proportional to 29,362.87, 40,520.87 and 15,934.12 is: 21,989.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,362.87 : 40,520.87 = 15,934.12 : x
  2. Step 2: Convert to fraction form
    29,362.87/40,520.87 = 15,934.12/x
  3. Step 3: Cross multiply
    29,362.87x = 40,520.87 × 15,934.12
  4. Step 4: Simplify right side
    29,362.87x = 645,664,405.08
  5. Step 5: Solve for x
    x = 645,664,405.08/29,362.87
  6. Step 6: Final answer
    x = 21,989.14

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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.