Home / 23,391.20-32,279.80-12,780.90

Finding the Fourth Proportional to 23,391.20, 32,279.80 and 12,780.90

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Solution

The fourth proportional to 23,391.20, 32,279.80 and 12,780.90 is: 17,637.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,391.20 : 32,279.80 = 12,780.90 : x
  2. Step 2: Convert to fraction form
    23,391.20/32,279.80 = 12,780.90/x
  3. Step 3: Cross multiply
    23,391.20x = 32,279.80 × 12,780.90
  4. Step 4: Simplify right side
    23,391.20x = 412,564,831.92
  5. Step 5: Solve for x
    x = 412,564,831.92/23,391.20
  6. Step 6: Final answer
    x = 17,637.61

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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.