Home / 27,876.49-38,469.57-15,129.67

Finding the Fourth Proportional to 27,876.49, 38,469.57 and 15,129.67

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Solution

The fourth proportional to 27,876.49, 38,469.57 and 15,129.67 is: 20,878.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,876.49 : 38,469.57 = 15,129.67 : x
  2. Step 2: Convert to fraction form
    27,876.49/38,469.57 = 15,129.67/x
  3. Step 3: Cross multiply
    27,876.49x = 38,469.57 × 15,129.67
  4. Step 4: Simplify right side
    27,876.49x = 582,031,802.97
  5. Step 5: Solve for x
    x = 582,031,802.97/27,876.49
  6. Step 6: Final answer
    x = 20,878.95

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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.