Home / 20,617.67-28,452.45-11,186.30

Finding the Fourth Proportional to 20,617.67, 28,452.45 and 11,186.30

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Solution

The fourth proportional to 20,617.67, 28,452.45 and 11,186.30 is: 15,437.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,617.67 : 28,452.45 = 11,186.30 : x
  2. Step 2: Convert to fraction form
    20,617.67/28,452.45 = 11,186.30/x
  3. Step 3: Cross multiply
    20,617.67x = 28,452.45 × 11,186.30
  4. Step 4: Simplify right side
    20,617.67x = 318,277,499.17
  5. Step 5: Solve for x
    x = 318,277,499.17/20,617.67
  6. Step 6: Final answer
    x = 15,437.13

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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.