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Finding the Fourth Proportional to 42,542.67, 63,811.68 and 12,958.03

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Solution

The fourth proportional to 42,542.67, 63,811.68 and 12,958.03 is: 19,436.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,542.67 : 63,811.68 = 12,958.03 : x
  2. Step 2: Convert to fraction form
    42,542.67/63,811.68 = 12,958.03/x
  3. Step 3: Cross multiply
    42,542.67x = 63,811.68 × 12,958.03
  4. Step 4: Simplify right side
    42,542.67x = 826,873,663.79
  5. Step 5: Solve for x
    x = 826,873,663.79/42,542.67
  6. Step 6: Final answer
    x = 19,436.34

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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.