Home / 18,568.17-25,640.55-12,621.96

Finding the Fourth Proportional to 18,568.17, 25,640.55 and 12,621.96

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Solution

The fourth proportional to 18,568.17, 25,640.55 and 12,621.96 is: 17,429.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,568.17 : 25,640.55 = 12,621.96 : x
  2. Step 2: Convert to fraction form
    18,568.17/25,640.55 = 12,621.96/x
  3. Step 3: Cross multiply
    18,568.17x = 25,640.55 × 12,621.96
  4. Step 4: Simplify right side
    18,568.17x = 323,633,996.48
  5. Step 5: Solve for x
    x = 323,633,996.48/18,568.17
  6. Step 6: Final answer
    x = 17,429.50

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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.