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Finding the Fourth Proportional to 12,615.62, 18,932.22 and 5,220.14

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Solution

The fourth proportional to 12,615.62, 18,932.22 and 5,220.14 is: 7,833.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,615.62 : 18,932.22 = 5,220.14 : x
  2. Step 2: Convert to fraction form
    12,615.62/18,932.22 = 5,220.14/x
  3. Step 3: Cross multiply
    12,615.62x = 18,932.22 × 5,220.14
  4. Step 4: Simplify right side
    12,615.62x = 98,828,838.91
  5. Step 5: Solve for x
    x = 98,828,838.91/12,615.62
  6. Step 6: Final answer
    x = 7,833.85

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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.