Home / 11,211.30-16,853.40-10,555.20

Finding the Fourth Proportional to 11,211.30, 16,853.40 and 10,555.20

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Solution

The fourth proportional to 11,211.30, 16,853.40 and 10,555.20 is: 15,867.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,211.30 : 16,853.40 = 10,555.20 : x
  2. Step 2: Convert to fraction form
    11,211.30/16,853.40 = 10,555.20/x
  3. Step 3: Cross multiply
    11,211.30x = 16,853.40 × 10,555.20
  4. Step 4: Simplify right side
    11,211.30x = 177,891,007.68
  5. Step 5: Solve for x
    x = 177,891,007.68/11,211.30
  6. Step 6: Final answer
    x = 15,867.12

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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.