Home / 11,331.36-15,640.49-6,855.41

Finding the Fourth Proportional to 11,331.36, 15,640.49 and 6,855.41

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Solution

The fourth proportional to 11,331.36, 15,640.49 and 6,855.41 is: 9,462.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,331.36 : 15,640.49 = 6,855.41 : x
  2. Step 2: Convert to fraction form
    11,331.36/15,640.49 = 6,855.41/x
  3. Step 3: Cross multiply
    11,331.36x = 15,640.49 × 6,855.41
  4. Step 4: Simplify right side
    11,331.36x = 107,221,859.07
  5. Step 5: Solve for x
    x = 107,221,859.07/11,331.36
  6. Step 6: Final answer
    x = 9,462.40

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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.