Home / 13,190.76-18,202.50-7,221.24

Finding the Fourth Proportional to 13,190.76, 18,202.50 and 7,221.24

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Solution

The fourth proportional to 13,190.76, 18,202.50 and 7,221.24 is: 9,964.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,190.76 : 18,202.50 = 7,221.24 : x
  2. Step 2: Convert to fraction form
    13,190.76/18,202.50 = 7,221.24/x
  3. Step 3: Cross multiply
    13,190.76x = 18,202.50 × 7,221.24
  4. Step 4: Simplify right side
    13,190.76x = 131,444,621.10
  5. Step 5: Solve for x
    x = 131,444,621.10/13,190.76
  6. Step 6: Final answer
    x = 9,964.90

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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.