Home / 20,766.24-31,157.28-8,922.60

Finding the Fourth Proportional to 20,766.24, 31,157.28 and 8,922.60

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Solution

The fourth proportional to 20,766.24, 31,157.28 and 8,922.60 is: 13,387.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,766.24 : 31,157.28 = 8,922.60 : x
  2. Step 2: Convert to fraction form
    20,766.24/31,157.28 = 8,922.60/x
  3. Step 3: Cross multiply
    20,766.24x = 31,157.28 × 8,922.60
  4. Step 4: Simplify right side
    20,766.24x = 278,003,946.53
  5. Step 5: Solve for x
    x = 278,003,946.53/20,766.24
  6. Step 6: Final answer
    x = 13,387.30

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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.