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Finding the Fourth Proportional to 13,053.54, 18,016.97 and 7,751.42

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Solution

The fourth proportional to 13,053.54, 18,016.97 and 7,751.42 is: 10,698.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,053.54 : 18,016.97 = 7,751.42 : x
  2. Step 2: Convert to fraction form
    13,053.54/18,016.97 = 7,751.42/x
  3. Step 3: Cross multiply
    13,053.54x = 18,016.97 × 7,751.42
  4. Step 4: Simplify right side
    13,053.54x = 139,656,972.76
  5. Step 5: Solve for x
    x = 139,656,972.76/13,053.54
  6. Step 6: Final answer
    x = 10,698.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.