Home / 31,000.88-42,781.36-16,853.68

Finding the Fourth Proportional to 31,000.88, 42,781.36 and 16,853.68

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Solution

The fourth proportional to 31,000.88, 42,781.36 and 16,853.68 is: 23,258.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,000.88 : 42,781.36 = 16,853.68 : x
  2. Step 2: Convert to fraction form
    31,000.88/42,781.36 = 16,853.68/x
  3. Step 3: Cross multiply
    31,000.88x = 42,781.36 × 16,853.68
  4. Step 4: Simplify right side
    31,000.88x = 721,023,351.40
  5. Step 5: Solve for x
    x = 721,023,351.40/31,000.88
  6. Step 6: Final answer
    x = 23,258.16

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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.