Home / 18,471.21-25,489.40-10,512.56

Finding the Fourth Proportional to 18,471.21, 25,489.40 and 10,512.56

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Solution

The fourth proportional to 18,471.21, 25,489.40 and 10,512.56 is: 14,506.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,471.21 : 25,489.40 = 10,512.56 : x
  2. Step 2: Convert to fraction form
    18,471.21/25,489.40 = 10,512.56/x
  3. Step 3: Cross multiply
    18,471.21x = 25,489.40 × 10,512.56
  4. Step 4: Simplify right side
    18,471.21x = 267,958,666.85
  5. Step 5: Solve for x
    x = 267,958,666.85/18,471.21
  6. Step 6: Final answer
    x = 14,506.83

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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.