Home / 31,000.68-42,781.86-16,854.44

Finding the Fourth Proportional to 31,000.68, 42,781.86 and 16,854.44

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Solution

The fourth proportional to 31,000.68, 42,781.86 and 16,854.44 is: 23,259.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,000.68 : 42,781.86 = 16,854.44 : x
  2. Step 2: Convert to fraction form
    31,000.68/42,781.86 = 16,854.44/x
  3. Step 3: Cross multiply
    31,000.68x = 42,781.86 × 16,854.44
  4. Step 4: Simplify right side
    31,000.68x = 721,064,292.46
  5. Step 5: Solve for x
    x = 721,064,292.46/31,000.68
  6. Step 6: Final answer
    x = 23,259.63

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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.