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Finding the Fourth Proportional to 13,169.99, 18,174.54 and 7,426.99

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Solution

The fourth proportional to 13,169.99, 18,174.54 and 7,426.99 is: 10,249.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,169.99 : 18,174.54 = 7,426.99 : x
  2. Step 2: Convert to fraction form
    13,169.99/18,174.54 = 7,426.99/x
  3. Step 3: Cross multiply
    13,169.99x = 18,174.54 × 7,426.99
  4. Step 4: Simplify right side
    13,169.99x = 134,982,177.40
  5. Step 5: Solve for x
    x = 134,982,177.40/13,169.99
  6. Step 6: Final answer
    x = 10,249.22

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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.