Home / 20,748.56-28,632.96-11,317.12

Finding the Fourth Proportional to 20,748.56, 28,632.96 and 11,317.12

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Solution

The fourth proportional to 20,748.56, 28,632.96 and 11,317.12 is: 15,617.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,748.56 : 28,632.96 = 11,317.12 : x
  2. Step 2: Convert to fraction form
    20,748.56/28,632.96 = 11,317.12/x
  3. Step 3: Cross multiply
    20,748.56x = 28,632.96 × 11,317.12
  4. Step 4: Simplify right side
    20,748.56x = 324,042,644.28
  5. Step 5: Solve for x
    x = 324,042,644.28/20,748.56
  6. Step 6: Final answer
    x = 15,617.60

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Similar ratio
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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.