Home / 42,378.14-63,560.45-11,215.82

Finding the Fourth Proportional to 42,378.14, 63,560.45 and 11,215.82

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Solution

The fourth proportional to 42,378.14, 63,560.45 and 11,215.82 is: 16,821.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,378.14 : 63,560.45 = 11,215.82 : x
  2. Step 2: Convert to fraction form
    42,378.14/63,560.45 = 11,215.82/x
  3. Step 3: Cross multiply
    42,378.14x = 63,560.45 × 11,215.82
  4. Step 4: Simplify right side
    42,378.14x = 712,882,192.44
  5. Step 5: Solve for x
    x = 712,882,192.44/42,378.14
  6. Step 6: Final answer
    x = 16,821.93

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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.