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Finding the Fourth Proportional to 13,357.70, 20,020.14 and 7,502

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Solution

The fourth proportional to 13,357.70, 20,020.14 and 7,502 is: 11,243.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,357.70 : 20,020.14 = 7,502 : x
  2. Step 2: Convert to fraction form
    13,357.70/20,020.14 = 7,502/x
  3. Step 3: Cross multiply
    13,357.70x = 20,020.14 × 7,502
  4. Step 4: Simplify right side
    13,357.70x = 150,191,090.28
  5. Step 5: Solve for x
    x = 150,191,090.28/13,357.70
  6. Step 6: Final answer
    x = 11,243.78

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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.