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Finding the Fourth Proportional to 8,904.74, 13,372.29 and 7,422.44

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Solution

The fourth proportional to 8,904.74, 13,372.29 and 7,422.44 is: 11,146.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,904.74 : 13,372.29 = 7,422.44 : x
  2. Step 2: Convert to fraction form
    8,904.74/13,372.29 = 7,422.44/x
  3. Step 3: Cross multiply
    8,904.74x = 13,372.29 × 7,422.44
  4. Step 4: Simplify right side
    8,904.74x = 99,254,953.33
  5. Step 5: Solve for x
    x = 99,254,953.33/8,904.74
  6. Step 6: Final answer
    x = 11,146.31

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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.