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Finding the Fourth Proportional to 18,717.70, 28,064.55 and 8,844.10

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Solution

The fourth proportional to 18,717.70, 28,064.55 and 8,844.10 is: 13,260.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,717.70 : 28,064.55 = 8,844.10 : x
  2. Step 2: Convert to fraction form
    18,717.70/28,064.55 = 8,844.10/x
  3. Step 3: Cross multiply
    18,717.70x = 28,064.55 × 8,844.10
  4. Step 4: Simplify right side
    18,717.70x = 248,205,686.66
  5. Step 5: Solve for x
    x = 248,205,686.66/18,717.70
  6. Step 6: Final answer
    x = 13,260.48

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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.