Home / 27,871.70-38,462.75-15,124.55

Finding the Fourth Proportional to 27,871.70, 38,462.75 and 15,124.55

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Solution

The fourth proportional to 27,871.70, 38,462.75 and 15,124.55 is: 20,871.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,871.70 : 38,462.75 = 15,124.55 : x
  2. Step 2: Convert to fraction form
    27,871.70/38,462.75 = 15,124.55/x
  3. Step 3: Cross multiply
    27,871.70x = 38,462.75 × 15,124.55
  4. Step 4: Simplify right side
    27,871.70x = 581,731,892.34
  5. Step 5: Solve for x
    x = 581,731,892.34/27,871.70
  6. Step 6: Final answer
    x = 20,871.78

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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.