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Finding the Fourth Proportional to 29,153.31, 40,237.95 and 18,540.87

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Solution

The fourth proportional to 29,153.31, 40,237.95 and 18,540.87 is: 25,590.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,153.31 : 40,237.95 = 18,540.87 : x
  2. Step 2: Convert to fraction form
    29,153.31/40,237.95 = 18,540.87/x
  3. Step 3: Cross multiply
    29,153.31x = 40,237.95 × 18,540.87
  4. Step 4: Simplify right side
    29,153.31x = 746,046,600.02
  5. Step 5: Solve for x
    x = 746,046,600.02/29,153.31
  6. Step 6: Final answer
    x = 25,590.46

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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.