Home / 18,142.64-25,042.06-10,972.56

Finding the Fourth Proportional to 18,142.64, 25,042.06 and 10,972.56

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Solution

The fourth proportional to 18,142.64, 25,042.06 and 10,972.56 is: 15,145.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,142.64 : 25,042.06 = 10,972.56 : x
  2. Step 2: Convert to fraction form
    18,142.64/25,042.06 = 10,972.56/x
  3. Step 3: Cross multiply
    18,142.64x = 25,042.06 × 10,972.56
  4. Step 4: Simplify right side
    18,142.64x = 274,775,505.87
  5. Step 5: Solve for x
    x = 274,775,505.87/18,142.64
  6. Step 6: Final answer
    x = 15,145.29

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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.