Home / 27,867.76-38,456.04-15,929.52

Finding the Fourth Proportional to 27,867.76, 38,456.04 and 15,929.52

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Solution

The fourth proportional to 27,867.76, 38,456.04 and 15,929.52 is: 21,981.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,867.76 : 38,456.04 = 15,929.52 : x
  2. Step 2: Convert to fraction form
    27,867.76/38,456.04 = 15,929.52/x
  3. Step 3: Cross multiply
    27,867.76x = 38,456.04 × 15,929.52
  4. Step 4: Simplify right side
    27,867.76x = 612,586,258.30
  5. Step 5: Solve for x
    x = 612,586,258.30/27,867.76
  6. Step 6: Final answer
    x = 21,981.90

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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.