Home / 11,116.96-15,343.56-7,143.10

Finding the Fourth Proportional to 11,116.96, 15,343.56 and 7,143.10

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Solution

The fourth proportional to 11,116.96, 15,343.56 and 7,143.10 is: 9,858.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,116.96 : 15,343.56 = 7,143.10 : x
  2. Step 2: Convert to fraction form
    11,116.96/15,343.56 = 7,143.10/x
  3. Step 3: Cross multiply
    11,116.96x = 15,343.56 × 7,143.10
  4. Step 4: Simplify right side
    11,116.96x = 109,600,583.44
  5. Step 5: Solve for x
    x = 109,600,583.44/11,116.96
  6. Step 6: Final answer
    x = 9,858.86

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Half scale
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Double scale
Find fourth proportional to 11,117.96, 15,344.94 and 7,144.10
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.