Home / 42,119.92-63,179.88-12,538.18

Finding the Fourth Proportional to 42,119.92, 63,179.88 and 12,538.18

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Solution

The fourth proportional to 42,119.92, 63,179.88 and 12,538.18 is: 18,807.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,119.92 : 63,179.88 = 12,538.18 : x
  2. Step 2: Convert to fraction form
    42,119.92/63,179.88 = 12,538.18/x
  3. Step 3: Cross multiply
    42,119.92x = 63,179.88 × 12,538.18
  4. Step 4: Simplify right side
    42,119.92x = 792,160,707.82
  5. Step 5: Solve for x
    x = 792,160,707.82/42,119.92
  6. Step 6: Final answer
    x = 18,807.27

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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.