Home / 42,376.62-63,540.21-12,785.58

Finding the Fourth Proportional to 42,376.62, 63,540.21 and 12,785.58

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Solution

The fourth proportional to 42,376.62, 63,540.21 and 12,785.58 is: 19,170.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,376.62 : 63,540.21 = 12,785.58 : x
  2. Step 2: Convert to fraction form
    42,376.62/63,540.21 = 12,785.58/x
  3. Step 3: Cross multiply
    42,376.62x = 63,540.21 × 12,785.58
  4. Step 4: Simplify right side
    42,376.62x = 812,398,438.17
  5. Step 5: Solve for x
    x = 812,398,438.17/42,376.62
  6. Step 6: Final answer
    x = 19,170.91

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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.