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Finding the Fourth Proportional to 15,077.92, 20,805.03 and 8,362.48

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Solution

The fourth proportional to 15,077.92, 20,805.03 and 8,362.48 is: 11,538.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,077.92 : 20,805.03 = 8,362.48 : x
  2. Step 2: Convert to fraction form
    15,077.92/20,805.03 = 8,362.48/x
  3. Step 3: Cross multiply
    15,077.92x = 20,805.03 × 8,362.48
  4. Step 4: Simplify right side
    15,077.92x = 173,981,647.27
  5. Step 5: Solve for x
    x = 173,981,647.27/15,077.92
  6. Step 6: Final answer
    x = 11,538.84

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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.