Home / 42,089.19-63,145.62-12,508.20

Finding the Fourth Proportional to 42,089.19, 63,145.62 and 12,508.20

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Solution

The fourth proportional to 42,089.19, 63,145.62 and 12,508.20 is: 18,765.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,089.19 : 63,145.62 = 12,508.20 : x
  2. Step 2: Convert to fraction form
    42,089.19/63,145.62 = 12,508.20/x
  3. Step 3: Cross multiply
    42,089.19x = 63,145.62 × 12,508.20
  4. Step 4: Simplify right side
    42,089.19x = 789,838,044.08
  5. Step 5: Solve for x
    x = 789,838,044.08/42,089.19
  6. Step 6: Final answer
    x = 18,765.82

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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.