Home / 18,023.13-27,008.78-10,215.45

Finding the Fourth Proportional to 18,023.13, 27,008.78 and 10,215.45

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Solution

The fourth proportional to 18,023.13, 27,008.78 and 10,215.45 is: 15,308.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,023.13 : 27,008.78 = 10,215.45 : x
  2. Step 2: Convert to fraction form
    18,023.13/27,008.78 = 10,215.45/x
  3. Step 3: Cross multiply
    18,023.13x = 27,008.78 × 10,215.45
  4. Step 4: Simplify right side
    18,023.13x = 275,906,790.57
  5. Step 5: Solve for x
    x = 275,906,790.57/18,023.13
  6. Step 6: Final answer
    x = 15,308.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.