Home / 11,015.19-15,190.54-7,231.68

Finding the Fourth Proportional to 11,015.19, 15,190.54 and 7,231.68

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Solution

The fourth proportional to 11,015.19, 15,190.54 and 7,231.68 is: 9,972.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,015.19 : 15,190.54 = 7,231.68 : x
  2. Step 2: Convert to fraction form
    11,015.19/15,190.54 = 7,231.68/x
  3. Step 3: Cross multiply
    11,015.19x = 15,190.54 × 7,231.68
  4. Step 4: Simplify right side
    11,015.19x = 109,853,106.23
  5. Step 5: Solve for x
    x = 109,853,106.23/11,015.19
  6. Step 6: Final answer
    x = 9,972.87

Related Problems

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Half scale
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Double scale
Find fourth proportional to 11,016.19, 15,191.92 and 7,232.68
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.