Home / 12,228.64-18,351.18-4,331.13

Finding the Fourth Proportional to 12,228.64, 18,351.18 and 4,331.13

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Solution

The fourth proportional to 12,228.64, 18,351.18 and 4,331.13 is: 6,499.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,228.64 : 18,351.18 = 4,331.13 : x
  2. Step 2: Convert to fraction form
    12,228.64/18,351.18 = 4,331.13/x
  3. Step 3: Cross multiply
    12,228.64x = 18,351.18 × 4,331.13
  4. Step 4: Simplify right side
    12,228.64x = 79,481,341.21
  5. Step 5: Solve for x
    x = 79,481,341.21/12,228.64
  6. Step 6: Final answer
    x = 6,499.61

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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.