Home / 12,398.38-18,631.62-6,559.12

Finding the Fourth Proportional to 12,398.38, 18,631.62 and 6,559.12

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Solution

The fourth proportional to 12,398.38, 18,631.62 and 6,559.12 is: 9,856.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,398.38 : 18,631.62 = 6,559.12 : x
  2. Step 2: Convert to fraction form
    12,398.38/18,631.62 = 6,559.12/x
  3. Step 3: Cross multiply
    12,398.38x = 18,631.62 × 6,559.12
  4. Step 4: Simplify right side
    12,398.38x = 122,207,031.37
  5. Step 5: Solve for x
    x = 122,207,031.37/12,398.38
  6. Step 6: Final answer
    x = 9,856.69

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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.