Home / 42,007.15-63,023.03-12,425.78

Finding the Fourth Proportional to 42,007.15, 63,023.03 and 12,425.78

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Solution

The fourth proportional to 42,007.15, 63,023.03 and 12,425.78 is: 18,642.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,007.15 : 63,023.03 = 12,425.78 : x
  2. Step 2: Convert to fraction form
    42,007.15/63,023.03 = 12,425.78/x
  3. Step 3: Cross multiply
    42,007.15x = 63,023.03 × 12,425.78
  4. Step 4: Simplify right side
    42,007.15x = 783,109,928.47
  5. Step 5: Solve for x
    x = 783,109,928.47/42,007.15
  6. Step 6: Final answer
    x = 18,642.30

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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.