Home / 11,122.39-15,347.37-6,645.19

Finding the Fourth Proportional to 11,122.39, 15,347.37 and 6,645.19

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Solution

The fourth proportional to 11,122.39, 15,347.37 and 6,645.19 is: 9,169.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,122.39 : 15,347.37 = 6,645.19 : x
  2. Step 2: Convert to fraction form
    11,122.39/15,347.37 = 6,645.19/x
  3. Step 3: Cross multiply
    11,122.39x = 15,347.37 × 6,645.19
  4. Step 4: Simplify right side
    11,122.39x = 101,986,137.83
  5. Step 5: Solve for x
    x = 101,986,137.83/11,122.39
  6. Step 6: Final answer
    x = 9,169.45

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Double scale
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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.