Home / 18,220.12-25,142.62-10,261.88

Finding the Fourth Proportional to 18,220.12, 25,142.62 and 10,261.88

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Solution

The fourth proportional to 18,220.12, 25,142.62 and 10,261.88 is: 14,160.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,220.12 : 25,142.62 = 10,261.88 : x
  2. Step 2: Convert to fraction form
    18,220.12/25,142.62 = 10,261.88/x
  3. Step 3: Cross multiply
    18,220.12x = 25,142.62 × 10,261.88
  4. Step 4: Simplify right side
    18,220.12x = 258,010,549.33
  5. Step 5: Solve for x
    x = 258,010,549.33/18,220.12
  6. Step 6: Final answer
    x = 14,160.75

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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.