Home / 20,613.69-28,446.98-11,182.32

Finding the Fourth Proportional to 20,613.69, 28,446.98 and 11,182.32

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Solution

The fourth proportional to 20,613.69, 28,446.98 and 11,182.32 is: 15,431.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,613.69 : 28,446.98 = 11,182.32 : x
  2. Step 2: Convert to fraction form
    20,613.69/28,446.98 = 11,182.32/x
  3. Step 3: Cross multiply
    20,613.69x = 28,446.98 × 11,182.32
  4. Step 4: Simplify right side
    20,613.69x = 318,103,177.48
  5. Step 5: Solve for x
    x = 318,103,177.48/20,613.69
  6. Step 6: Final answer
    x = 15,431.65

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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.