Home / 15,200.56-20,971-9,229.96

Finding the Fourth Proportional to 15,200.56, 20,971 and 9,229.96

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Solution

The fourth proportional to 15,200.56, 20,971 and 9,229.96 is: 12,733.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,200.56 : 20,971 = 9,229.96 : x
  2. Step 2: Convert to fraction form
    15,200.56/20,971 = 9,229.96/x
  3. Step 3: Cross multiply
    15,200.56x = 20,971 × 9,229.96
  4. Step 4: Simplify right side
    15,200.56x = 193,561,491.16
  5. Step 5: Solve for x
    x = 193,561,491.16/15,200.56
  6. Step 6: Final answer
    x = 12,733.84

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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.