Home / 12,575.37-18,872.19-10,139.61

Finding the Fourth Proportional to 12,575.37, 18,872.19 and 10,139.61

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Solution

The fourth proportional to 12,575.37, 18,872.19 and 10,139.61 is: 15,216.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,575.37 : 18,872.19 = 10,139.61 : x
  2. Step 2: Convert to fraction form
    12,575.37/18,872.19 = 10,139.61/x
  3. Step 3: Cross multiply
    12,575.37x = 18,872.19 × 10,139.61
  4. Step 4: Simplify right side
    12,575.37x = 191,356,646.45
  5. Step 5: Solve for x
    x = 191,356,646.45/12,575.37
  6. Step 6: Final answer
    x = 15,216.78

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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.