Home / 26,129.12-39,198.56-8,611.28

Finding the Fourth Proportional to 26,129.12, 39,198.56 and 8,611.28

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Solution

The fourth proportional to 26,129.12, 39,198.56 and 8,611.28 is: 12,918.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,129.12 : 39,198.56 = 8,611.28 : x
  2. Step 2: Convert to fraction form
    26,129.12/39,198.56 = 8,611.28/x
  3. Step 3: Cross multiply
    26,129.12x = 39,198.56 × 8,611.28
  4. Step 4: Simplify right side
    26,129.12x = 337,549,775.76
  5. Step 5: Solve for x
    x = 337,549,775.76/26,129.12
  6. Step 6: Final answer
    x = 12,918.53

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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.