Home / 12,206.91-18,311.29-5,186.14

Finding the Fourth Proportional to 12,206.91, 18,311.29 and 5,186.14

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Solution

The fourth proportional to 12,206.91, 18,311.29 and 5,186.14 is: 7,779.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,206.91 : 18,311.29 = 5,186.14 : x
  2. Step 2: Convert to fraction form
    12,206.91/18,311.29 = 5,186.14/x
  3. Step 3: Cross multiply
    12,206.91x = 18,311.29 × 5,186.14
  4. Step 4: Simplify right side
    12,206.91x = 94,964,854.78
  5. Step 5: Solve for x
    x = 94,964,854.78/12,206.91
  6. Step 6: Final answer
    x = 7,779.60

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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.