Home / 22,575.11-31,153.88-13,620.88

Finding the Fourth Proportional to 22,575.11, 31,153.88 and 13,620.88

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Solution

The fourth proportional to 22,575.11, 31,153.88 and 13,620.88 is: 18,796.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,575.11 : 31,153.88 = 13,620.88 : x
  2. Step 2: Convert to fraction form
    22,575.11/31,153.88 = 13,620.88/x
  3. Step 3: Cross multiply
    22,575.11x = 31,153.88 × 13,620.88
  4. Step 4: Simplify right side
    22,575.11x = 424,343,037.14
  5. Step 5: Solve for x
    x = 424,343,037.14/22,575.11
  6. Step 6: Final answer
    x = 18,796.95

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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.