Home / 12,218.24-18,315.84-4,425.20

Finding the Fourth Proportional to 12,218.24, 18,315.84 and 4,425.20

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Solution

The fourth proportional to 12,218.24, 18,315.84 and 4,425.20 is: 6,633.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,218.24 : 18,315.84 = 4,425.20 : x
  2. Step 2: Convert to fraction form
    12,218.24/18,315.84 = 4,425.20/x
  3. Step 3: Cross multiply
    12,218.24x = 18,315.84 × 4,425.20
  4. Step 4: Simplify right side
    12,218.24x = 81,051,255.17
  5. Step 5: Solve for x
    x = 81,051,255.17/12,218.24
  6. Step 6: Final answer
    x = 6,633.63

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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.