Home / 42,262.68-63,390.24-12,687.12

Finding the Fourth Proportional to 42,262.68, 63,390.24 and 12,687.12

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Solution

The fourth proportional to 42,262.68, 63,390.24 and 12,687.12 is: 19,029.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,262.68 : 63,390.24 = 12,687.12 : x
  2. Step 2: Convert to fraction form
    42,262.68/63,390.24 = 12,687.12/x
  3. Step 3: Cross multiply
    42,262.68x = 63,390.24 × 12,687.12
  4. Step 4: Simplify right side
    42,262.68x = 804,239,581.71
  5. Step 5: Solve for x
    x = 804,239,581.71/42,262.68
  6. Step 6: Final answer
    x = 19,029.55

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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.