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Finding the Fourth Proportional to 15,499.92, 21,373.56 and 11,019

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Solution

The fourth proportional to 15,499.92, 21,373.56 and 11,019 is: 15,194.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,499.92 : 21,373.56 = 11,019 : x
  2. Step 2: Convert to fraction form
    15,499.92/21,373.56 = 11,019/x
  3. Step 3: Cross multiply
    15,499.92x = 21,373.56 × 11,019
  4. Step 4: Simplify right side
    15,499.92x = 235,515,257.64
  5. Step 5: Solve for x
    x = 235,515,257.64/15,499.92
  6. Step 6: Final answer
    x = 15,194.61

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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.