Home / 18,220.55-25,091.42-15,829.43

Finding the Fourth Proportional to 18,220.55, 25,091.42 and 15,829.43

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Solution

The fourth proportional to 18,220.55, 25,091.42 and 15,829.43 is: 21,798.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,220.55 : 25,091.42 = 15,829.43 : x
  2. Step 2: Convert to fraction form
    18,220.55/25,091.42 = 15,829.43/x
  3. Step 3: Cross multiply
    18,220.55x = 25,091.42 × 15,829.43
  4. Step 4: Simplify right side
    18,220.55x = 397,182,876.49
  5. Step 5: Solve for x
    x = 397,182,876.49/18,220.55
  6. Step 6: Final answer
    x = 21,798.62

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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.