Home / 42,480.46-63,716.56-12,898.55

Finding the Fourth Proportional to 42,480.46, 63,716.56 and 12,898.55

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Solution

The fourth proportional to 42,480.46, 63,716.56 and 12,898.55 is: 19,346.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,480.46 : 63,716.56 = 12,898.55 : x
  2. Step 2: Convert to fraction form
    42,480.46/63,716.56 = 12,898.55/x
  3. Step 3: Cross multiply
    42,480.46x = 63,716.56 × 12,898.55
  4. Step 4: Simplify right side
    42,480.46x = 821,851,171.47
  5. Step 5: Solve for x
    x = 821,851,171.47/42,480.46
  6. Step 6: Final answer
    x = 19,346.57

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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.