Home / 20,514.60-28,302.50-13,789.57

Finding the Fourth Proportional to 20,514.60, 28,302.50 and 13,789.57

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Solution

The fourth proportional to 20,514.60, 28,302.50 and 13,789.57 is: 19,024.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,514.60 : 28,302.50 = 13,789.57 : x
  2. Step 2: Convert to fraction form
    20,514.60/28,302.50 = 13,789.57/x
  3. Step 3: Cross multiply
    20,514.60x = 28,302.50 × 13,789.57
  4. Step 4: Simplify right side
    20,514.60x = 390,279,304.93
  5. Step 5: Solve for x
    x = 390,279,304.93/20,514.60
  6. Step 6: Final answer
    x = 19,024.47

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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.