Home / 15,906.12-21,949.32-9,938.88

Finding the Fourth Proportional to 15,906.12, 21,949.32 and 9,938.88

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Solution

The fourth proportional to 15,906.12, 21,949.32 and 9,938.88 is: 13,714.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,906.12 : 21,949.32 = 9,938.88 : x
  2. Step 2: Convert to fraction form
    15,906.12/21,949.32 = 9,938.88/x
  3. Step 3: Cross multiply
    15,906.12x = 21,949.32 × 9,938.88
  4. Step 4: Simplify right side
    15,906.12x = 218,151,657.56
  5. Step 5: Solve for x
    x = 218,151,657.56/15,906.12
  6. Step 6: Final answer
    x = 13,714.95

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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.