Home / 12,255.83-18,354.12-6,974.84

Finding the Fourth Proportional to 12,255.83, 18,354.12 and 6,974.84

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Solution

The fourth proportional to 12,255.83, 18,354.12 and 6,974.84 is: 10,445.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,255.83 : 18,354.12 = 6,974.84 : x
  2. Step 2: Convert to fraction form
    12,255.83/18,354.12 = 6,974.84/x
  3. Step 3: Cross multiply
    12,255.83x = 18,354.12 × 6,974.84
  4. Step 4: Simplify right side
    12,255.83x = 128,016,958.57
  5. Step 5: Solve for x
    x = 128,016,958.57/12,255.83
  6. Step 6: Final answer
    x = 10,445.40

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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.