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Finding the Fourth Proportional to 15,062.60, 20,786.02 and 8,774.57

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Solution

The fourth proportional to 15,062.60, 20,786.02 and 8,774.57 is: 12,108.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,062.60 : 20,786.02 = 8,774.57 : x
  2. Step 2: Convert to fraction form
    15,062.60/20,786.02 = 8,774.57/x
  3. Step 3: Cross multiply
    15,062.60x = 20,786.02 × 8,774.57
  4. Step 4: Simplify right side
    15,062.60x = 182,388,239.71
  5. Step 5: Solve for x
    x = 182,388,239.71/15,062.60
  6. Step 6: Final answer
    x = 12,108.69

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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.