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Finding the Fourth Proportional to 11,258.80, 16,888.20 and 11,105.20

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Solution

The fourth proportional to 11,258.80, 16,888.20 and 11,105.20 is: 16,657.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,258.80 : 16,888.20 = 11,105.20 : x
  2. Step 2: Convert to fraction form
    11,258.80/16,888.20 = 11,105.20/x
  3. Step 3: Cross multiply
    11,258.80x = 16,888.20 × 11,105.20
  4. Step 4: Simplify right side
    11,258.80x = 187,546,838.64
  5. Step 5: Solve for x
    x = 187,546,838.64/11,258.80
  6. Step 6: Final answer
    x = 16,657.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.