Home / 20,613.93-28,447.17-11,182.50

Finding the Fourth Proportional to 20,613.93, 28,447.17 and 11,182.50

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Solution

The fourth proportional to 20,613.93, 28,447.17 and 11,182.50 is: 15,431.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,613.93 : 28,447.17 = 11,182.50 : x
  2. Step 2: Convert to fraction form
    20,613.93/28,447.17 = 11,182.50/x
  3. Step 3: Cross multiply
    20,613.93x = 28,447.17 × 11,182.50
  4. Step 4: Simplify right side
    20,613.93x = 318,110,364.25
  5. Step 5: Solve for x
    x = 318,110,364.25/20,613.93
  6. Step 6: Final answer
    x = 15,431.81

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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.