Home / 31,001.48-42,780.12-17,388.77

Finding the Fourth Proportional to 31,001.48, 42,780.12 and 17,388.77

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Solution

The fourth proportional to 31,001.48, 42,780.12 and 17,388.77 is: 23,995.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,001.48 : 42,780.12 = 17,388.77 : x
  2. Step 2: Convert to fraction form
    31,001.48/42,780.12 = 17,388.77/x
  3. Step 3: Cross multiply
    31,001.48x = 42,780.12 × 17,388.77
  4. Step 4: Simplify right side
    31,001.48x = 743,893,613.78
  5. Step 5: Solve for x
    x = 743,893,613.78/31,001.48
  6. Step 6: Final answer
    x = 23,995.43

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.