Home / 42,319.60-63,458.88-12,731.92

Finding the Fourth Proportional to 42,319.60, 63,458.88 and 12,731.92

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Solution

The fourth proportional to 42,319.60, 63,458.88 and 12,731.92 is: 19,091.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,319.60 : 63,458.88 = 12,731.92 : x
  2. Step 2: Convert to fraction form
    42,319.60/63,458.88 = 12,731.92/x
  3. Step 3: Cross multiply
    42,319.60x = 63,458.88 × 12,731.92
  4. Step 4: Simplify right side
    42,319.60x = 807,953,383.45
  5. Step 5: Solve for x
    x = 807,953,383.45/42,319.60
  6. Step 6: Final answer
    x = 19,091.71

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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.