Home / 11,357.10-17,040.38-5,112.81

Finding the Fourth Proportional to 11,357.10, 17,040.38 and 5,112.81

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Solution

The fourth proportional to 11,357.10, 17,040.38 and 5,112.81 is: 7,671.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,357.10 : 17,040.38 = 5,112.81 : x
  2. Step 2: Convert to fraction form
    11,357.10/17,040.38 = 5,112.81/x
  3. Step 3: Cross multiply
    11,357.10x = 17,040.38 × 5,112.81
  4. Step 4: Simplify right side
    11,357.10x = 87,124,199.70
  5. Step 5: Solve for x
    x = 87,124,199.70/11,357.10
  6. Step 6: Final answer
    x = 7,671.34

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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.