Home / 27,960.78-38,586.60-15,214.77

Finding the Fourth Proportional to 27,960.78, 38,586.60 and 15,214.77

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Solution

The fourth proportional to 27,960.78, 38,586.60 and 15,214.77 is: 20,996.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,960.78 : 38,586.60 = 15,214.77 : x
  2. Step 2: Convert to fraction form
    27,960.78/38,586.60 = 15,214.77/x
  3. Step 3: Cross multiply
    27,960.78x = 38,586.60 × 15,214.77
  4. Step 4: Simplify right side
    27,960.78x = 587,086,244.08
  5. Step 5: Solve for x
    x = 587,086,244.08/27,960.78
  6. Step 6: Final answer
    x = 20,996.78

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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.