Home / 20,617.68-28,452.42-11,186.28

Finding the Fourth Proportional to 20,617.68, 28,452.42 and 11,186.28

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Solution

The fourth proportional to 20,617.68, 28,452.42 and 11,186.28 is: 15,437.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,617.68 : 28,452.42 = 11,186.28 : x
  2. Step 2: Convert to fraction form
    20,617.68/28,452.42 = 11,186.28/x
  3. Step 3: Cross multiply
    20,617.68x = 28,452.42 × 11,186.28
  4. Step 4: Simplify right side
    20,617.68x = 318,276,736.80
  5. Step 5: Solve for x
    x = 318,276,736.80/20,617.68
  6. Step 6: Final answer
    x = 15,437.08

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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.