Home / 13,220.95-18,239.88-8,441.07

Finding the Fourth Proportional to 13,220.95, 18,239.88 and 8,441.07

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Solution

The fourth proportional to 13,220.95, 18,239.88 and 8,441.07 is: 11,645.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,220.95 : 18,239.88 = 8,441.07 : x
  2. Step 2: Convert to fraction form
    13,220.95/18,239.88 = 8,441.07/x
  3. Step 3: Cross multiply
    13,220.95x = 18,239.88 × 8,441.07
  4. Step 4: Simplify right side
    13,220.95x = 153,964,103.87
  5. Step 5: Solve for x
    x = 153,964,103.87/13,220.95
  6. Step 6: Final answer
    x = 11,645.46

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Half scale
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Similar ratio
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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.