Home / 42,278.58-63,422.15-15,631.70

Finding the Fourth Proportional to 42,278.58, 63,422.15 and 15,631.70

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Solution

The fourth proportional to 42,278.58, 63,422.15 and 15,631.70 is: 23,449.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,278.58 : 63,422.15 = 15,631.70 : x
  2. Step 2: Convert to fraction form
    42,278.58/63,422.15 = 15,631.70/x
  3. Step 3: Cross multiply
    42,278.58x = 63,422.15 × 15,631.70
  4. Step 4: Simplify right side
    42,278.58x = 991,395,727.06
  5. Step 5: Solve for x
    x = 991,395,727.06/42,278.58
  6. Step 6: Final answer
    x = 23,449.12

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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.