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Finding the Fourth Proportional to 27,876.76, 38,519.76 and 20,735.50

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Solution

The fourth proportional to 27,876.76, 38,519.76 and 20,735.50 is: 28,652.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,876.76 : 38,519.76 = 20,735.50 : x
  2. Step 2: Convert to fraction form
    27,876.76/38,519.76 = 20,735.50/x
  3. Step 3: Cross multiply
    27,876.76x = 38,519.76 × 20,735.50
  4. Step 4: Simplify right side
    27,876.76x = 798,726,483.48
  5. Step 5: Solve for x
    x = 798,726,483.48/27,876.76
  6. Step 6: Final answer
    x = 28,652.06

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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.