Home / 18,311.12-27,447.80-7,213.30

Finding the Fourth Proportional to 18,311.12, 27,447.80 and 7,213.30

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Solution

The fourth proportional to 18,311.12, 27,447.80 and 7,213.30 is: 10,812.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,311.12 : 27,447.80 = 7,213.30 : x
  2. Step 2: Convert to fraction form
    18,311.12/27,447.80 = 7,213.30/x
  3. Step 3: Cross multiply
    18,311.12x = 27,447.80 × 7,213.30
  4. Step 4: Simplify right side
    18,311.12x = 197,989,215.74
  5. Step 5: Solve for x
    x = 197,989,215.74/18,311.12
  6. Step 6: Final answer
    x = 10,812.51

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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.