Home / 22,712.90-31,343.49-12,641.34

Finding the Fourth Proportional to 22,712.90, 31,343.49 and 12,641.34

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Solution

The fourth proportional to 22,712.90, 31,343.49 and 12,641.34 is: 17,444.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,712.90 : 31,343.49 = 12,641.34 : x
  2. Step 2: Convert to fraction form
    22,712.90/31,343.49 = 12,641.34/x
  3. Step 3: Cross multiply
    22,712.90x = 31,343.49 × 12,641.34
  4. Step 4: Simplify right side
    22,712.90x = 396,223,713.88
  5. Step 5: Solve for x
    x = 396,223,713.88/22,712.90
  6. Step 6: Final answer
    x = 17,444.88

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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.