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Finding the Fourth Proportional to 15,095.82, 20,832.15 and 8,381.52

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Solution

The fourth proportional to 15,095.82, 20,832.15 and 8,381.52 is: 11,566.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,095.82 : 20,832.15 = 8,381.52 : x
  2. Step 2: Convert to fraction form
    15,095.82/20,832.15 = 8,381.52/x
  3. Step 3: Cross multiply
    15,095.82x = 20,832.15 × 8,381.52
  4. Step 4: Simplify right side
    15,095.82x = 174,605,081.87
  5. Step 5: Solve for x
    x = 174,605,081.87/15,095.82
  6. Step 6: Final answer
    x = 11,566.45

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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.