Home / 31,001.18-42,780.44-16,854.02

Finding the Fourth Proportional to 31,001.18, 42,780.44 and 16,854.02

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Solution

The fourth proportional to 31,001.18, 42,780.44 and 16,854.02 is: 23,257.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,001.18 : 42,780.44 = 16,854.02 : x
  2. Step 2: Convert to fraction form
    31,001.18/42,780.44 = 16,854.02/x
  3. Step 3: Cross multiply
    31,001.18x = 42,780.44 × 16,854.02
  4. Step 4: Simplify right side
    31,001.18x = 721,022,093.20
  5. Step 5: Solve for x
    x = 721,022,093.20/31,001.18
  6. Step 6: Final answer
    x = 23,257.90

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1.5x scale

Why These Related Problems?

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