Home / 27,912.36-38,521.20-15,979.44

Finding the Fourth Proportional to 27,912.36, 38,521.20 and 15,979.44

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Solution

The fourth proportional to 27,912.36, 38,521.20 and 15,979.44 is: 22,052.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,912.36 : 38,521.20 = 15,979.44 : x
  2. Step 2: Convert to fraction form
    27,912.36/38,521.20 = 15,979.44/x
  3. Step 3: Cross multiply
    27,912.36x = 38,521.20 × 15,979.44
  4. Step 4: Simplify right side
    27,912.36x = 615,547,204.13
  5. Step 5: Solve for x
    x = 615,547,204.13/27,912.36
  6. Step 6: Final answer
    x = 22,052.85

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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.