Home / 18,216.30-27,319.05-7,116.60

Finding the Fourth Proportional to 18,216.30, 27,319.05 and 7,116.60

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Solution

The fourth proportional to 18,216.30, 27,319.05 and 7,116.60 is: 10,672.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,216.30 : 27,319.05 = 7,116.60 : x
  2. Step 2: Convert to fraction form
    18,216.30/27,319.05 = 7,116.60/x
  3. Step 3: Cross multiply
    18,216.30x = 27,319.05 × 7,116.60
  4. Step 4: Simplify right side
    18,216.30x = 194,418,751.23
  5. Step 5: Solve for x
    x = 194,418,751.23/18,216.30
  6. Step 6: Final answer
    x = 10,672.79

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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.