Home / 27,912.20-38,516.59-15,972.80

Finding the Fourth Proportional to 27,912.20, 38,516.59 and 15,972.80

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Solution

The fourth proportional to 27,912.20, 38,516.59 and 15,972.80 is: 22,041.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,912.20 : 38,516.59 = 15,972.80 : x
  2. Step 2: Convert to fraction form
    27,912.20/38,516.59 = 15,972.80/x
  3. Step 3: Cross multiply
    27,912.20x = 38,516.59 × 15,972.80
  4. Step 4: Simplify right side
    27,912.20x = 615,217,516.31
  5. Step 5: Solve for x
    x = 615,217,516.31/27,912.20
  6. Step 6: Final answer
    x = 22,041.17

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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.