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Finding the Fourth Proportional to 29,391.53, 40,569.53 and 18,781.20

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Solution

The fourth proportional to 29,391.53, 40,569.53 and 18,781.20 is: 25,923.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,391.53 : 40,569.53 = 18,781.20 : x
  2. Step 2: Convert to fraction form
    29,391.53/40,569.53 = 18,781.20/x
  3. Step 3: Cross multiply
    29,391.53x = 40,569.53 × 18,781.20
  4. Step 4: Simplify right side
    29,391.53x = 761,944,362.93
  5. Step 5: Solve for x
    x = 761,944,362.93/29,391.53
  6. Step 6: Final answer
    x = 25,923.95

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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.