Home / 18,278.13-27,395.11-8,904.12

Finding the Fourth Proportional to 18,278.13, 27,395.11 and 8,904.12

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Solution

The fourth proportional to 18,278.13, 27,395.11 and 8,904.12 is: 13,345.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,278.13 : 27,395.11 = 8,904.12 : x
  2. Step 2: Convert to fraction form
    18,278.13/27,395.11 = 8,904.12/x
  3. Step 3: Cross multiply
    18,278.13x = 27,395.11 × 8,904.12
  4. Step 4: Simplify right side
    18,278.13x = 243,929,346.85
  5. Step 5: Solve for x
    x = 243,929,346.85/18,278.13
  6. Step 6: Final answer
    x = 13,345.42

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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.