Home / 15,512.43-21,353.11-13,519.56

Finding the Fourth Proportional to 15,512.43, 21,353.11 and 13,519.56

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Solution

The fourth proportional to 15,512.43, 21,353.11 and 13,519.56 is: 18,609.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,512.43 : 21,353.11 = 13,519.56 : x
  2. Step 2: Convert to fraction form
    15,512.43/21,353.11 = 13,519.56/x
  3. Step 3: Cross multiply
    15,512.43x = 21,353.11 × 13,519.56
  4. Step 4: Simplify right side
    15,512.43x = 288,684,651.83
  5. Step 5: Solve for x
    x = 288,684,651.83/15,512.43
  6. Step 6: Final answer
    x = 18,609.89

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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.