Home / 18,129.12-25,018.32-10,171.44

Finding the Fourth Proportional to 18,129.12, 25,018.32 and 10,171.44

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Solution

The fourth proportional to 18,129.12, 25,018.32 and 10,171.44 is: 14,036.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,129.12 : 25,018.32 = 10,171.44 : x
  2. Step 2: Convert to fraction form
    18,129.12/25,018.32 = 10,171.44/x
  3. Step 3: Cross multiply
    18,129.12x = 25,018.32 × 10,171.44
  4. Step 4: Simplify right side
    18,129.12x = 254,472,340.78
  5. Step 5: Solve for x
    x = 254,472,340.78/18,129.12
  6. Step 6: Final answer
    x = 14,036.66

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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.