Home / 42,481.61-63,718.30-12,899.71

Finding the Fourth Proportional to 42,481.61, 63,718.30 and 12,899.71

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Solution

The fourth proportional to 42,481.61, 63,718.30 and 12,899.71 is: 19,348.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,481.61 : 63,718.30 = 12,899.71 : x
  2. Step 2: Convert to fraction form
    42,481.61/63,718.30 = 12,899.71/x
  3. Step 3: Cross multiply
    42,481.61x = 63,718.30 × 12,899.71
  4. Step 4: Simplify right side
    42,481.61x = 821,947,208.60
  5. Step 5: Solve for x
    x = 821,947,208.60/42,481.61
  6. Step 6: Final answer
    x = 19,348.31

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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.