Home / 11,728.40-17,504.51-10,140.09

Finding the Fourth Proportional to 11,728.40, 17,504.51 and 10,140.09

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Solution

The fourth proportional to 11,728.40, 17,504.51 and 10,140.09 is: 15,133.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,728.40 : 17,504.51 = 10,140.09 : x
  2. Step 2: Convert to fraction form
    11,728.40/17,504.51 = 10,140.09/x
  3. Step 3: Cross multiply
    11,728.40x = 17,504.51 × 10,140.09
  4. Step 4: Simplify right side
    11,728.40x = 177,497,190.46
  5. Step 5: Solve for x
    x = 177,497,190.46/11,728.40
  6. Step 6: Final answer
    x = 15,133.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.