Home / 42,118.87-63,178.05-10,528.78

Finding the Fourth Proportional to 42,118.87, 63,178.05 and 10,528.78

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Solution

The fourth proportional to 42,118.87, 63,178.05 and 10,528.78 is: 15,793.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,118.87 : 63,178.05 = 10,528.78 : x
  2. Step 2: Convert to fraction form
    42,118.87/63,178.05 = 10,528.78/x
  3. Step 3: Cross multiply
    42,118.87x = 63,178.05 × 10,528.78
  4. Step 4: Simplify right side
    42,118.87x = 665,187,789.28
  5. Step 5: Solve for x
    x = 665,187,789.28/42,118.87
  6. Step 6: Final answer
    x = 15,793.11

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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.