Home / 18,360.90-27,540.88-5,213.28

Finding the Fourth Proportional to 18,360.90, 27,540.88 and 5,213.28

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Solution

The fourth proportional to 18,360.90, 27,540.88 and 5,213.28 is: 7,819.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,360.90 : 27,540.88 = 5,213.28 : x
  2. Step 2: Convert to fraction form
    18,360.90/27,540.88 = 5,213.28/x
  3. Step 3: Cross multiply
    18,360.90x = 27,540.88 × 5,213.28
  4. Step 4: Simplify right side
    18,360.90x = 143,578,318.89
  5. Step 5: Solve for x
    x = 143,578,318.89/18,360.90
  6. Step 6: Final answer
    x = 7,819.79

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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.