Home / 17,879.20-24,650.58-12,780.76

Finding the Fourth Proportional to 17,879.20, 24,650.58 and 12,780.76

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Solution

The fourth proportional to 17,879.20, 24,650.58 and 12,780.76 is: 17,621.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,879.20 : 24,650.58 = 12,780.76 : x
  2. Step 2: Convert to fraction form
    17,879.20/24,650.58 = 12,780.76/x
  3. Step 3: Cross multiply
    17,879.20x = 24,650.58 × 12,780.76
  4. Step 4: Simplify right side
    17,879.20x = 315,053,146.84
  5. Step 5: Solve for x
    x = 315,053,146.84/17,879.20
  6. Step 6: Final answer
    x = 17,621.21

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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.