Home / 18,123.12-25,059.24-15,790.32

Finding the Fourth Proportional to 18,123.12, 25,059.24 and 15,790.32

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Solution

The fourth proportional to 18,123.12, 25,059.24 and 15,790.32 is: 21,833.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,123.12 : 25,059.24 = 15,790.32 : x
  2. Step 2: Convert to fraction form
    18,123.12/25,059.24 = 15,790.32/x
  3. Step 3: Cross multiply
    18,123.12x = 25,059.24 × 15,790.32
  4. Step 4: Simplify right side
    18,123.12x = 395,693,418.56
  5. Step 5: Solve for x
    x = 395,693,418.56/18,123.12
  6. Step 6: Final answer
    x = 21,833.63

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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.