Home / 18,258.70-25,190.28-11,979.58

Finding the Fourth Proportional to 18,258.70, 25,190.28 and 11,979.58

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Solution

The fourth proportional to 18,258.70, 25,190.28 and 11,979.58 is: 16,527.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,258.70 : 25,190.28 = 11,979.58 : x
  2. Step 2: Convert to fraction form
    18,258.70/25,190.28 = 11,979.58/x
  3. Step 3: Cross multiply
    18,258.70x = 25,190.28 × 11,979.58
  4. Step 4: Simplify right side
    18,258.70x = 301,768,974.48
  5. Step 5: Solve for x
    x = 301,768,974.48/18,258.70
  6. Step 6: Final answer
    x = 16,527.41

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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.