Home / 31,001.12-42,781.62-16,853.94

Finding the Fourth Proportional to 31,001.12, 42,781.62 and 16,853.94

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Solution

The fourth proportional to 31,001.12, 42,781.62 and 16,853.94 is: 23,258.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,001.12 : 42,781.62 = 16,853.94 : x
  2. Step 2: Convert to fraction form
    31,001.12/42,781.62 = 16,853.94/x
  3. Step 3: Cross multiply
    31,001.12x = 42,781.62 × 16,853.94
  4. Step 4: Simplify right side
    31,001.12x = 721,038,856.58
  5. Step 5: Solve for x
    x = 721,038,856.58/31,001.12
  6. Step 6: Final answer
    x = 23,258.48

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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.