Home / 26,145.68-39,178.20-12,278.48

Finding the Fourth Proportional to 26,145.68, 39,178.20 and 12,278.48

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Solution

The fourth proportional to 26,145.68, 39,178.20 and 12,278.48 is: 18,398.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,145.68 : 39,178.20 = 12,278.48 : x
  2. Step 2: Convert to fraction form
    26,145.68/39,178.20 = 12,278.48/x
  3. Step 3: Cross multiply
    26,145.68x = 39,178.20 × 12,278.48
  4. Step 4: Simplify right side
    26,145.68x = 481,048,745.14
  5. Step 5: Solve for x
    x = 481,048,745.14/26,145.68
  6. Step 6: Final answer
    x = 18,398.79

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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.