Home / 27,687.05-38,211.78-15,748.08

Finding the Fourth Proportional to 27,687.05, 38,211.78 and 15,748.08

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Solution

The fourth proportional to 27,687.05, 38,211.78 and 15,748.08 is: 21,734.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,687.05 : 38,211.78 = 15,748.08 : x
  2. Step 2: Convert to fraction form
    27,687.05/38,211.78 = 15,748.08/x
  3. Step 3: Cross multiply
    27,687.05x = 38,211.78 × 15,748.08
  4. Step 4: Simplify right side
    27,687.05x = 601,762,168.38
  5. Step 5: Solve for x
    x = 601,762,168.38/27,687.05
  6. Step 6: Final answer
    x = 21,734.43

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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.