Home / 18,291.03-25,242.89-11,123.75

Finding the Fourth Proportional to 18,291.03, 25,242.89 and 11,123.75

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Solution

The fourth proportional to 18,291.03, 25,242.89 and 11,123.75 is: 15,351.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,291.03 : 25,242.89 = 11,123.75 : x
  2. Step 2: Convert to fraction form
    18,291.03/25,242.89 = 11,123.75/x
  3. Step 3: Cross multiply
    18,291.03x = 25,242.89 × 11,123.75
  4. Step 4: Simplify right side
    18,291.03x = 280,795,597.64
  5. Step 5: Solve for x
    x = 280,795,597.64/18,291.03
  6. Step 6: Final answer
    x = 15,351.55

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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.