Home / 18,218.89-25,256.73-17,221.07

Finding the Fourth Proportional to 18,218.89, 25,256.73 and 17,221.07

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Solution

The fourth proportional to 18,218.89, 25,256.73 and 17,221.07 is: 23,873.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,218.89 : 25,256.73 = 17,221.07 : x
  2. Step 2: Convert to fraction form
    18,218.89/25,256.73 = 17,221.07/x
  3. Step 3: Cross multiply
    18,218.89x = 25,256.73 × 17,221.07
  4. Step 4: Simplify right side
    18,218.89x = 434,947,915.30
  5. Step 5: Solve for x
    x = 434,947,915.30/18,218.89
  6. Step 6: Final answer
    x = 23,873.46

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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.