Home / 31,001.58-42,780.34-16,854.30

Finding the Fourth Proportional to 31,001.58, 42,780.34 and 16,854.30

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Solution

The fourth proportional to 31,001.58, 42,780.34 and 16,854.30 is: 23,257.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,001.58 : 42,780.34 = 16,854.30 : x
  2. Step 2: Convert to fraction form
    31,001.58/42,780.34 = 16,854.30/x
  3. Step 3: Cross multiply
    31,001.58x = 42,780.34 × 16,854.30
  4. Step 4: Simplify right side
    31,001.58x = 721,032,684.46
  5. Step 5: Solve for x
    x = 721,032,684.46/31,001.58
  6. Step 6: Final answer
    x = 23,257.93

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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.