Home / 20,514.32-28,311.76-12,133.52

Finding the Fourth Proportional to 20,514.32, 28,311.76 and 12,133.52

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Solution

The fourth proportional to 20,514.32, 28,311.76 and 12,133.52 is: 16,745.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,514.32 : 28,311.76 = 12,133.52 : x
  2. Step 2: Convert to fraction form
    20,514.32/28,311.76 = 12,133.52/x
  3. Step 3: Cross multiply
    20,514.32x = 28,311.76 × 12,133.52
  4. Step 4: Simplify right side
    20,514.32x = 343,521,306.20
  5. Step 5: Solve for x
    x = 343,521,306.20/20,514.32
  6. Step 6: Final answer
    x = 16,745.44

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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.