Home / 18,023.30-27,002.55-15,431.30

Finding the Fourth Proportional to 18,023.30, 27,002.55 and 15,431.30

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Solution

The fourth proportional to 18,023.30, 27,002.55 and 15,431.30 is: 23,119.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,023.30 : 27,002.55 = 15,431.30 : x
  2. Step 2: Convert to fraction form
    18,023.30/27,002.55 = 15,431.30/x
  3. Step 3: Cross multiply
    18,023.30x = 27,002.55 × 15,431.30
  4. Step 4: Simplify right side
    18,023.30x = 416,684,449.82
  5. Step 5: Solve for x
    x = 416,684,449.82/18,023.30
  6. Step 6: Final answer
    x = 23,119.21

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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.