Home / 20,824.10-31,217.26-10,817.15

Finding the Fourth Proportional to 20,824.10, 31,217.26 and 10,817.15

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Solution

The fourth proportional to 20,824.10, 31,217.26 and 10,817.15 is: 16,215.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,824.10 : 31,217.26 = 10,817.15 : x
  2. Step 2: Convert to fraction form
    20,824.10/31,217.26 = 10,817.15/x
  3. Step 3: Cross multiply
    20,824.10x = 31,217.26 × 10,817.15
  4. Step 4: Simplify right side
    20,824.10x = 337,681,854.13
  5. Step 5: Solve for x
    x = 337,681,854.13/20,824.10
  6. Step 6: Final answer
    x = 16,215.91

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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.