Home / 38,712.20-53,361.12-29,137.70

Finding the Fourth Proportional to 38,712.20, 53,361.12 and 29,137.70

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Solution

The fourth proportional to 38,712.20, 53,361.12 and 29,137.70 is: 40,163.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,712.20 : 53,361.12 = 29,137.70 : x
  2. Step 2: Convert to fraction form
    38,712.20/53,361.12 = 29,137.70/x
  3. Step 3: Cross multiply
    38,712.20x = 53,361.12 × 29,137.70
  4. Step 4: Simplify right side
    38,712.20x = 1,554,820,306.22
  5. Step 5: Solve for x
    x = 1,554,820,306.22/38,712.20
  6. Step 6: Final answer
    x = 40,163.57

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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.