Home / 12,158.88-18,238.32-6,303.20

Finding the Fourth Proportional to 12,158.88, 18,238.32 and 6,303.20

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Solution

The fourth proportional to 12,158.88, 18,238.32 and 6,303.20 is: 9,454.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,158.88 : 18,238.32 = 6,303.20 : x
  2. Step 2: Convert to fraction form
    12,158.88/18,238.32 = 6,303.20/x
  3. Step 3: Cross multiply
    12,158.88x = 18,238.32 × 6,303.20
  4. Step 4: Simplify right side
    12,158.88x = 114,959,687.43
  5. Step 5: Solve for x
    x = 114,959,687.43/12,158.88
  6. Step 6: Final answer
    x = 9,454.79

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Similar ratio
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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.