Home / 15,820.92-21,832.34-9,105.62

Finding the Fourth Proportional to 15,820.92, 21,832.34 and 9,105.62

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Solution

The fourth proportional to 15,820.92, 21,832.34 and 9,105.62 is: 12,565.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,820.92 : 21,832.34 = 9,105.62 : x
  2. Step 2: Convert to fraction form
    15,820.92/21,832.34 = 9,105.62/x
  3. Step 3: Cross multiply
    15,820.92x = 21,832.34 × 9,105.62
  4. Step 4: Simplify right side
    15,820.92x = 198,796,837.06
  5. Step 5: Solve for x
    x = 198,796,837.06/15,820.92
  6. Step 6: Final answer
    x = 12,565.44

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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.