Home / 12,845.92-17,727.48-7,540.80

Finding the Fourth Proportional to 12,845.92, 17,727.48 and 7,540.80

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Solution

The fourth proportional to 12,845.92, 17,727.48 and 7,540.80 is: 10,406.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,845.92 : 17,727.48 = 7,540.80 : x
  2. Step 2: Convert to fraction form
    12,845.92/17,727.48 = 7,540.80/x
  3. Step 3: Cross multiply
    12,845.92x = 17,727.48 × 7,540.80
  4. Step 4: Simplify right side
    12,845.92x = 133,679,381.18
  5. Step 5: Solve for x
    x = 133,679,381.18/12,845.92
  6. Step 6: Final answer
    x = 10,406.37

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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.