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Finding the Fourth Proportional to 8,981.21, 13,502.22 and 7,238.44

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Solution

The fourth proportional to 8,981.21, 13,502.22 and 7,238.44 is: 10,882.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,981.21 : 13,502.22 = 7,238.44 : x
  2. Step 2: Convert to fraction form
    8,981.21/13,502.22 = 7,238.44/x
  3. Step 3: Cross multiply
    8,981.21x = 13,502.22 × 7,238.44
  4. Step 4: Simplify right side
    8,981.21x = 97,735,009.34
  5. Step 5: Solve for x
    x = 97,735,009.34/8,981.21
  6. Step 6: Final answer
    x = 10,882.17

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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.