Home / 31,563.28-43,553.64-18,989.20

Finding the Fourth Proportional to 31,563.28, 43,553.64 and 18,989.20

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Solution

The fourth proportional to 31,563.28, 43,553.64 and 18,989.20 is: 26,202.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,563.28 : 43,553.64 = 18,989.20 : x
  2. Step 2: Convert to fraction form
    31,563.28/43,553.64 = 18,989.20/x
  3. Step 3: Cross multiply
    31,563.28x = 43,553.64 × 18,989.20
  4. Step 4: Simplify right side
    31,563.28x = 827,048,780.69
  5. Step 5: Solve for x
    x = 827,048,780.69/31,563.28
  6. Step 6: Final answer
    x = 26,202.88

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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.