Home / 15,905.88-21,949.68-8,832.12

Finding the Fourth Proportional to 15,905.88, 21,949.68 and 8,832.12

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Solution

The fourth proportional to 15,905.88, 21,949.68 and 8,832.12 is: 12,188.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,905.88 : 21,949.68 = 8,832.12 : x
  2. Step 2: Convert to fraction form
    15,905.88/21,949.68 = 8,832.12/x
  3. Step 3: Cross multiply
    15,905.88x = 21,949.68 × 8,832.12
  4. Step 4: Simplify right side
    15,905.88x = 193,862,207.72
  5. Step 5: Solve for x
    x = 193,862,207.72/15,905.88
  6. Step 6: Final answer
    x = 12,188.08

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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.