Home / 11,508.35-15,881.79-6,403.92

Finding the Fourth Proportional to 11,508.35, 15,881.79 and 6,403.92

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Solution

The fourth proportional to 11,508.35, 15,881.79 and 6,403.92 is: 8,837.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,508.35 : 15,881.79 = 6,403.92 : x
  2. Step 2: Convert to fraction form
    11,508.35/15,881.79 = 6,403.92/x
  3. Step 3: Cross multiply
    11,508.35x = 15,881.79 × 6,403.92
  4. Step 4: Simplify right side
    11,508.35x = 101,705,712.62
  5. Step 5: Solve for x
    x = 101,705,712.62/11,508.35
  6. Step 6: Final answer
    x = 8,837.56

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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.