Home / 18,105.33-24,985.35-11,031.78

Finding the Fourth Proportional to 18,105.33, 24,985.35 and 11,031.78

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Solution

The fourth proportional to 18,105.33, 24,985.35 and 11,031.78 is: 15,223.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,105.33 : 24,985.35 = 11,031.78 : x
  2. Step 2: Convert to fraction form
    18,105.33/24,985.35 = 11,031.78/x
  3. Step 3: Cross multiply
    18,105.33x = 24,985.35 × 11,031.78
  4. Step 4: Simplify right side
    18,105.33x = 275,632,884.42
  5. Step 5: Solve for x
    x = 275,632,884.42/18,105.33
  6. Step 6: Final answer
    x = 15,223.85

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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.