Home / 12,108.24-18,165.28-4,209.61

Finding the Fourth Proportional to 12,108.24, 18,165.28 and 4,209.61

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Solution

The fourth proportional to 12,108.24, 18,165.28 and 4,209.61 is: 6,315.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,108.24 : 18,165.28 = 4,209.61 : x
  2. Step 2: Convert to fraction form
    12,108.24/18,165.28 = 4,209.61/x
  3. Step 3: Cross multiply
    12,108.24x = 18,165.28 × 4,209.61
  4. Step 4: Simplify right side
    12,108.24x = 76,468,744.34
  5. Step 5: Solve for x
    x = 76,468,744.34/12,108.24
  6. Step 6: Final answer
    x = 6,315.43

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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.