Home / 18,215.89-25,252.56-17,218.07

Finding the Fourth Proportional to 18,215.89, 25,252.56 and 17,218.07

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Solution

The fourth proportional to 18,215.89, 25,252.56 and 17,218.07 is: 23,869.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,215.89 : 25,252.56 = 17,218.07 : x
  2. Step 2: Convert to fraction form
    18,215.89/25,252.56 = 17,218.07/x
  3. Step 3: Cross multiply
    18,215.89x = 25,252.56 × 17,218.07
  4. Step 4: Simplify right side
    18,215.89x = 434,800,314.19
  5. Step 5: Solve for x
    x = 434,800,314.19/18,215.89
  6. Step 6: Final answer
    x = 23,869.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.