Home / 12,319.08-18,486.14-6,479.88

Finding the Fourth Proportional to 12,319.08, 18,486.14 and 6,479.88

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Solution

The fourth proportional to 12,319.08, 18,486.14 and 6,479.88 is: 9,723.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,319.08 : 18,486.14 = 6,479.88 : x
  2. Step 2: Convert to fraction form
    12,319.08/18,486.14 = 6,479.88/x
  3. Step 3: Cross multiply
    12,319.08x = 18,486.14 × 6,479.88
  4. Step 4: Simplify right side
    12,319.08x = 119,787,968.86
  5. Step 5: Solve for x
    x = 119,787,968.86/12,319.08
  6. Step 6: Final answer
    x = 9,723.78

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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.