Home / 18,747.72-28,134.14-12,514.77

Finding the Fourth Proportional to 18,747.72, 28,134.14 and 12,514.77

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Solution

The fourth proportional to 18,747.72, 28,134.14 and 12,514.77 is: 18,780.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,747.72 : 28,134.14 = 12,514.77 : x
  2. Step 2: Convert to fraction form
    18,747.72/28,134.14 = 12,514.77/x
  3. Step 3: Cross multiply
    18,747.72x = 28,134.14 × 12,514.77
  4. Step 4: Simplify right side
    18,747.72x = 352,092,228.67
  5. Step 5: Solve for x
    x = 352,092,228.67/18,747.72
  6. Step 6: Final answer
    x = 18,780.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.