Home / 15,905.12-21,949.26-8,832.20

Finding the Fourth Proportional to 15,905.12, 21,949.26 and 8,832.20

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Solution

The fourth proportional to 15,905.12, 21,949.26 and 8,832.20 is: 12,188.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,905.12 : 21,949.26 = 8,832.20 : x
  2. Step 2: Convert to fraction form
    15,905.12/21,949.26 = 8,832.20/x
  3. Step 3: Cross multiply
    15,905.12x = 21,949.26 × 8,832.20
  4. Step 4: Simplify right side
    15,905.12x = 193,860,254.17
  5. Step 5: Solve for x
    x = 193,860,254.17/15,905.12
  6. Step 6: Final answer
    x = 12,188.54

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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.