Home / 15,755.17-21,742.60-8,682.05

Finding the Fourth Proportional to 15,755.17, 21,742.60 and 8,682.05

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Solution

The fourth proportional to 15,755.17, 21,742.60 and 8,682.05 is: 11,981.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,755.17 : 21,742.60 = 8,682.05 : x
  2. Step 2: Convert to fraction form
    15,755.17/21,742.60 = 8,682.05/x
  3. Step 3: Cross multiply
    15,755.17x = 21,742.60 × 8,682.05
  4. Step 4: Simplify right side
    15,755.17x = 188,770,362.04
  5. Step 5: Solve for x
    x = 188,770,362.04/15,755.17
  6. Step 6: Final answer
    x = 11,981.48

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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.