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Finding the Fourth Proportional to 11,508.03, 15,879.92 and 6,471.45

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Solution

The fourth proportional to 11,508.03, 15,879.92 and 6,471.45 is: 8,929.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,508.03 : 15,879.92 = 6,471.45 : x
  2. Step 2: Convert to fraction form
    11,508.03/15,879.92 = 6,471.45/x
  3. Step 3: Cross multiply
    11,508.03x = 15,879.92 × 6,471.45
  4. Step 4: Simplify right side
    11,508.03x = 102,766,108.28
  5. Step 5: Solve for x
    x = 102,766,108.28/11,508.03
  6. Step 6: Final answer
    x = 8,929.95

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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.