Home / 18,775.72-25,910.40-10,278.61

Finding the Fourth Proportional to 18,775.72, 25,910.40 and 10,278.61

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Solution

The fourth proportional to 18,775.72, 25,910.40 and 10,278.61 is: 14,184.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,775.72 : 25,910.40 = 10,278.61 : x
  2. Step 2: Convert to fraction form
    18,775.72/25,910.40 = 10,278.61/x
  3. Step 3: Cross multiply
    18,775.72x = 25,910.40 × 10,278.61
  4. Step 4: Simplify right side
    18,775.72x = 266,322,766.99
  5. Step 5: Solve for x
    x = 266,322,766.99/18,775.72
  6. Step 6: Final answer
    x = 14,184.43

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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.