Home / 20,232.16-27,942.16-15,400.56

Finding the Fourth Proportional to 20,232.16, 27,942.16 and 15,400.56

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Solution

The fourth proportional to 20,232.16, 27,942.16 and 15,400.56 is: 21,269.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,232.16 : 27,942.16 = 15,400.56 : x
  2. Step 2: Convert to fraction form
    20,232.16/27,942.16 = 15,400.56/x
  3. Step 3: Cross multiply
    20,232.16x = 27,942.16 × 15,400.56
  4. Step 4: Simplify right side
    20,232.16x = 430,324,892.91
  5. Step 5: Solve for x
    x = 430,324,892.91/20,232.16
  6. Step 6: Final answer
    x = 21,269.35

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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.