Home / 12,399.38-18,633.12-6,560.12

Finding the Fourth Proportional to 12,399.38, 18,633.12 and 6,560.12

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Solution

The fourth proportional to 12,399.38, 18,633.12 and 6,560.12 is: 9,858.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,399.38 : 18,633.12 = 6,560.12 : x
  2. Step 2: Convert to fraction form
    12,399.38/18,633.12 = 6,560.12/x
  3. Step 3: Cross multiply
    12,399.38x = 18,633.12 × 6,560.12
  4. Step 4: Simplify right side
    12,399.38x = 122,235,503.17
  5. Step 5: Solve for x
    x = 122,235,503.17/12,399.38
  6. Step 6: Final answer
    x = 9,858.19

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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.