Home / 12,113.20-18,166.68-4,320.88

Finding the Fourth Proportional to 12,113.20, 18,166.68 and 4,320.88

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Solution

The fourth proportional to 12,113.20, 18,166.68 and 4,320.88 is: 6,480.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,113.20 : 18,166.68 = 4,320.88 : x
  2. Step 2: Convert to fraction form
    12,113.20/18,166.68 = 4,320.88/x
  3. Step 3: Cross multiply
    12,113.20x = 18,166.68 × 4,320.88
  4. Step 4: Simplify right side
    12,113.20x = 78,496,044.28
  5. Step 5: Solve for x
    x = 78,496,044.28/12,113.20
  6. Step 6: Final answer
    x = 6,480.21

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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.