Home / 26,278.20-39,417.30-10,687.80

Finding the Fourth Proportional to 26,278.20, 39,417.30 and 10,687.80

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Solution

The fourth proportional to 26,278.20, 39,417.30 and 10,687.80 is: 16,031.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,278.20 : 39,417.30 = 10,687.80 : x
  2. Step 2: Convert to fraction form
    26,278.20/39,417.30 = 10,687.80/x
  3. Step 3: Cross multiply
    26,278.20x = 39,417.30 × 10,687.80
  4. Step 4: Simplify right side
    26,278.20x = 421,284,218.94
  5. Step 5: Solve for x
    x = 421,284,218.94/26,278.20
  6. Step 6: Final answer
    x = 16,031.70

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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.