Home / 15,211.19-20,991.40-8,496.83

Finding the Fourth Proportional to 15,211.19, 20,991.40 and 8,496.83

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Solution

The fourth proportional to 15,211.19, 20,991.40 and 8,496.83 is: 11,725.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,211.19 : 20,991.40 = 8,496.83 : x
  2. Step 2: Convert to fraction form
    15,211.19/20,991.40 = 8,496.83/x
  3. Step 3: Cross multiply
    15,211.19x = 20,991.40 × 8,496.83
  4. Step 4: Simplify right side
    15,211.19x = 178,360,436.29
  5. Step 5: Solve for x
    x = 178,360,436.29/15,211.19
  6. Step 6: Final answer
    x = 11,725.61

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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.