Home / 18,258.33-25,211.86-11,555.78

Finding the Fourth Proportional to 18,258.33, 25,211.86 and 11,555.78

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Solution

The fourth proportional to 18,258.33, 25,211.86 and 11,555.78 is: 15,956.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,258.33 : 25,211.86 = 11,555.78 : x
  2. Step 2: Convert to fraction form
    18,258.33/25,211.86 = 11,555.78/x
  3. Step 3: Cross multiply
    18,258.33x = 25,211.86 × 11,555.78
  4. Step 4: Simplify right side
    18,258.33x = 291,342,741.69
  5. Step 5: Solve for x
    x = 291,342,741.69/18,258.33
  6. Step 6: Final answer
    x = 15,956.70

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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.