Home / 42,311.73-63,454.80-12,721.71

Finding the Fourth Proportional to 42,311.73, 63,454.80 and 12,721.71

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Solution

The fourth proportional to 42,311.73, 63,454.80 and 12,721.71 is: 19,078.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,311.73 : 63,454.80 = 12,721.71 : x
  2. Step 2: Convert to fraction form
    42,311.73/63,454.80 = 12,721.71/x
  3. Step 3: Cross multiply
    42,311.73x = 63,454.80 × 12,721.71
  4. Step 4: Simplify right side
    42,311.73x = 807,253,563.71
  5. Step 5: Solve for x
    x = 807,253,563.71/42,311.73
  6. Step 6: Final answer
    x = 19,078.72

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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.