Home / 22,959.05-31,680.87-12,886.16

Finding the Fourth Proportional to 22,959.05, 31,680.87 and 12,886.16

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Solution

The fourth proportional to 22,959.05, 31,680.87 and 12,886.16 is: 17,781.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,959.05 : 31,680.87 = 12,886.16 : x
  2. Step 2: Convert to fraction form
    22,959.05/31,680.87 = 12,886.16/x
  3. Step 3: Cross multiply
    22,959.05x = 31,680.87 × 12,886.16
  4. Step 4: Simplify right side
    22,959.05x = 408,244,759.76
  5. Step 5: Solve for x
    x = 408,244,759.76/22,959.05
  6. Step 6: Final answer
    x = 17,781.43

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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.