Home / 23,122.83-31,909.17-12,913.75

Finding the Fourth Proportional to 23,122.83, 31,909.17 and 12,913.75

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Solution

The fourth proportional to 23,122.83, 31,909.17 and 12,913.75 is: 17,820.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,122.83 : 31,909.17 = 12,913.75 : x
  2. Step 2: Convert to fraction form
    23,122.83/31,909.17 = 12,913.75/x
  3. Step 3: Cross multiply
    23,122.83x = 31,909.17 × 12,913.75
  4. Step 4: Simplify right side
    23,122.83x = 412,067,044.09
  5. Step 5: Solve for x
    x = 412,067,044.09/23,122.83
  6. Step 6: Final answer
    x = 17,820.79

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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.