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Finding the Fourth Proportional to 8,918.18, 13,364.52 and 5,014.40

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Solution

The fourth proportional to 8,918.18, 13,364.52 and 5,014.40 is: 7,514.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,918.18 : 13,364.52 = 5,014.40 : x
  2. Step 2: Convert to fraction form
    8,918.18/13,364.52 = 5,014.40/x
  3. Step 3: Cross multiply
    8,918.18x = 13,364.52 × 5,014.40
  4. Step 4: Simplify right side
    8,918.18x = 67,015,049.09
  5. Step 5: Solve for x
    x = 67,015,049.09/8,918.18
  6. Step 6: Final answer
    x = 7,514.43

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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.