Home / 42,154.38-63,231.48-12,571.47

Finding the Fourth Proportional to 42,154.38, 63,231.48 and 12,571.47

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Solution

The fourth proportional to 42,154.38, 63,231.48 and 12,571.47 is: 18,857.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,154.38 : 63,231.48 = 12,571.47 : x
  2. Step 2: Convert to fraction form
    42,154.38/63,231.48 = 12,571.47/x
  3. Step 3: Cross multiply
    42,154.38x = 63,231.48 × 12,571.47
  4. Step 4: Simplify right side
    42,154.38x = 794,912,653.88
  5. Step 5: Solve for x
    x = 794,912,653.88/42,154.38
  6. Step 6: Final answer
    x = 18,857.18

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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.