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Finding the Fourth Proportional to 29,640.72, 44,411.72 and 20,857.18

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Solution

The fourth proportional to 29,640.72, 44,411.72 and 20,857.18 is: 31,251.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,640.72 : 44,411.72 = 20,857.18 : x
  2. Step 2: Convert to fraction form
    29,640.72/44,411.72 = 20,857.18/x
  3. Step 3: Cross multiply
    29,640.72x = 44,411.72 × 20,857.18
  4. Step 4: Simplify right side
    29,640.72x = 926,303,238.15
  5. Step 5: Solve for x
    x = 926,303,238.15/29,640.72
  6. Step 6: Final answer
    x = 31,251.04

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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.