Home / 27,912.66-38,505.96-18,489.12

Finding the Fourth Proportional to 27,912.66, 38,505.96 and 18,489.12

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Solution

The fourth proportional to 27,912.66, 38,505.96 and 18,489.12 is: 25,506.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,912.66 : 38,505.96 = 18,489.12 : x
  2. Step 2: Convert to fraction form
    27,912.66/38,505.96 = 18,489.12/x
  3. Step 3: Cross multiply
    27,912.66x = 38,505.96 × 18,489.12
  4. Step 4: Simplify right side
    27,912.66x = 711,941,315.16
  5. Step 5: Solve for x
    x = 711,941,315.16/27,912.66
  6. Step 6: Final answer
    x = 25,506.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.