Home / 13,191.04-18,203.84-7,222.69

Finding the Fourth Proportional to 13,191.04, 18,203.84 and 7,222.69

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Solution

The fourth proportional to 13,191.04, 18,203.84 and 7,222.69 is: 9,967.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,191.04 : 18,203.84 = 7,222.69 : x
  2. Step 2: Convert to fraction form
    13,191.04/18,203.84 = 7,222.69/x
  3. Step 3: Cross multiply
    13,191.04x = 18,203.84 × 7,222.69
  4. Step 4: Simplify right side
    13,191.04x = 131,480,693.13
  5. Step 5: Solve for x
    x = 131,480,693.13/13,191.04
  6. Step 6: Final answer
    x = 9,967.42

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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.