Home / 21,889.26-32,781.29-12,500.84

Finding the Fourth Proportional to 21,889.26, 32,781.29 and 12,500.84

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Solution

The fourth proportional to 21,889.26, 32,781.29 and 12,500.84 is: 18,721.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,889.26 : 32,781.29 = 12,500.84 : x
  2. Step 2: Convert to fraction form
    21,889.26/32,781.29 = 12,500.84/x
  3. Step 3: Cross multiply
    21,889.26x = 32,781.29 × 12,500.84
  4. Step 4: Simplify right side
    21,889.26x = 409,793,680.73
  5. Step 5: Solve for x
    x = 409,793,680.73/21,889.26
  6. Step 6: Final answer
    x = 18,721.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.