Home / 12,191.40-18,278.10-6,352.20

Finding the Fourth Proportional to 12,191.40, 18,278.10 and 6,352.20

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Solution

The fourth proportional to 12,191.40, 18,278.10 and 6,352.20 is: 9,523.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,191.40 : 18,278.10 = 6,352.20 : x
  2. Step 2: Convert to fraction form
    12,191.40/18,278.10 = 6,352.20/x
  3. Step 3: Cross multiply
    12,191.40x = 18,278.10 × 6,352.20
  4. Step 4: Simplify right side
    12,191.40x = 116,106,146.82
  5. Step 5: Solve for x
    x = 116,106,146.82/12,191.40
  6. Step 6: Final answer
    x = 9,523.61

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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.