Home / 20,680.43-31,024.05-18,588.30

Finding the Fourth Proportional to 20,680.43, 31,024.05 and 18,588.30

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Solution

The fourth proportional to 20,680.43, 31,024.05 and 18,588.30 is: 27,885.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,680.43 : 31,024.05 = 18,588.30 : x
  2. Step 2: Convert to fraction form
    20,680.43/31,024.05 = 18,588.30/x
  3. Step 3: Cross multiply
    20,680.43x = 31,024.05 × 18,588.30
  4. Step 4: Simplify right side
    20,680.43x = 576,684,348.62
  5. Step 5: Solve for x
    x = 576,684,348.62/20,680.43
  6. Step 6: Final answer
    x = 27,885.52

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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.