Home / 18,270.45-25,214.13-11,100.42

Finding the Fourth Proportional to 18,270.45, 25,214.13 and 11,100.42

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Solution

The fourth proportional to 18,270.45, 25,214.13 and 11,100.42 is: 15,319.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,270.45 : 25,214.13 = 11,100.42 : x
  2. Step 2: Convert to fraction form
    18,270.45/25,214.13 = 11,100.42/x
  3. Step 3: Cross multiply
    18,270.45x = 25,214.13 × 11,100.42
  4. Step 4: Simplify right side
    18,270.45x = 279,887,432.93
  5. Step 5: Solve for x
    x = 279,887,432.93/18,270.45
  6. Step 6: Final answer
    x = 15,319.13

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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.