Home / 13,191.08-18,203.69-7,222.73

Finding the Fourth Proportional to 13,191.08, 18,203.69 and 7,222.73

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Solution

The fourth proportional to 13,191.08, 18,203.69 and 7,222.73 is: 9,967.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,191.08 : 18,203.69 = 7,222.73 : x
  2. Step 2: Convert to fraction form
    13,191.08/18,203.69 = 7,222.73/x
  3. Step 3: Cross multiply
    13,191.08x = 18,203.69 × 7,222.73
  4. Step 4: Simplify right side
    13,191.08x = 131,480,337.87
  5. Step 5: Solve for x
    x = 131,480,337.87/13,191.08
  6. Step 6: Final answer
    x = 9,967.37

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Half scale
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Double 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.