Home / 12,436.08-17,158.38-8,655

Finding the Fourth Proportional to 12,436.08, 17,158.38 and 8,655

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Solution

The fourth proportional to 12,436.08, 17,158.38 and 8,655 is: 11,941.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,436.08 : 17,158.38 = 8,655 : x
  2. Step 2: Convert to fraction form
    12,436.08/17,158.38 = 8,655/x
  3. Step 3: Cross multiply
    12,436.08x = 17,158.38 × 8,655
  4. Step 4: Simplify right side
    12,436.08x = 148,505,778.90
  5. Step 5: Solve for x
    x = 148,505,778.90/12,436.08
  6. Step 6: Final answer
    x = 11,941.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.