Home / 18,243.32-25,177.31-10,287.20

Finding the Fourth Proportional to 18,243.32, 25,177.31 and 10,287.20

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Solution

The fourth proportional to 18,243.32, 25,177.31 and 10,287.20 is: 14,197.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,243.32 : 25,177.31 = 10,287.20 : x
  2. Step 2: Convert to fraction form
    18,243.32/25,177.31 = 10,287.20/x
  3. Step 3: Cross multiply
    18,243.32x = 25,177.31 × 10,287.20
  4. Step 4: Simplify right side
    18,243.32x = 259,003,923.26
  5. Step 5: Solve for x
    x = 259,003,923.26/18,243.32
  6. Step 6: Final answer
    x = 14,197.19

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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.