Home / 13,191.44-18,203.40-7,223.12

Finding the Fourth Proportional to 13,191.44, 18,203.40 and 7,223.12

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Solution

The fourth proportional to 13,191.44, 18,203.40 and 7,223.12 is: 9,967.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,191.44 : 18,203.40 = 7,223.12 : x
  2. Step 2: Convert to fraction form
    13,191.44/18,203.40 = 7,223.12/x
  3. Step 3: Cross multiply
    13,191.44x = 18,203.40 × 7,223.12
  4. Step 4: Simplify right side
    13,191.44x = 131,485,342.61
  5. Step 5: Solve for x
    x = 131,485,342.61/13,191.44
  6. Step 6: Final answer
    x = 9,967.47

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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.