Home / 20,471.52-28,253.14-12,514.88

Finding the Fourth Proportional to 20,471.52, 28,253.14 and 12,514.88

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Solution

The fourth proportional to 20,471.52, 28,253.14 and 12,514.88 is: 17,272.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,471.52 : 28,253.14 = 12,514.88 : x
  2. Step 2: Convert to fraction form
    20,471.52/28,253.14 = 12,514.88/x
  3. Step 3: Cross multiply
    20,471.52x = 28,253.14 × 12,514.88
  4. Step 4: Simplify right side
    20,471.52x = 353,584,656.72
  5. Step 5: Solve for x
    x = 353,584,656.72/20,471.52
  6. Step 6: Final answer
    x = 17,272.03

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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.