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Finding the Fourth Proportional to 13,297.60, 19,945.48 and 7,377.28

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Solution

The fourth proportional to 13,297.60, 19,945.48 and 7,377.28 is: 11,065.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,297.60 : 19,945.48 = 7,377.28 : x
  2. Step 2: Convert to fraction form
    13,297.60/19,945.48 = 7,377.28/x
  3. Step 3: Cross multiply
    13,297.60x = 19,945.48 × 7,377.28
  4. Step 4: Simplify right side
    13,297.60x = 147,143,390.69
  5. Step 5: Solve for x
    x = 147,143,390.69/13,297.60
  6. Step 6: Final answer
    x = 11,065.41

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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.