Home / 11,161.39-15,403.41-7,377.99

Finding the Fourth Proportional to 11,161.39, 15,403.41 and 7,377.99

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Solution

The fourth proportional to 11,161.39, 15,403.41 and 7,377.99 is: 10,182.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,161.39 : 15,403.41 = 7,377.99 : x
  2. Step 2: Convert to fraction form
    11,161.39/15,403.41 = 7,377.99/x
  3. Step 3: Cross multiply
    11,161.39x = 15,403.41 × 7,377.99
  4. Step 4: Simplify right side
    11,161.39x = 113,646,243.45
  5. Step 5: Solve for x
    x = 113,646,243.45/11,161.39
  6. Step 6: Final answer
    x = 10,182.09

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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.