Home / 13,111.44-18,094.12-7,143.42

Finding the Fourth Proportional to 13,111.44, 18,094.12 and 7,143.42

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Solution

The fourth proportional to 13,111.44, 18,094.12 and 7,143.42 is: 9,858.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,111.44 : 18,094.12 = 7,143.42 : x
  2. Step 2: Convert to fraction form
    13,111.44/18,094.12 = 7,143.42/x
  3. Step 3: Cross multiply
    13,111.44x = 18,094.12 × 7,143.42
  4. Step 4: Simplify right side
    13,111.44x = 129,253,898.69
  5. Step 5: Solve for x
    x = 129,253,898.69/13,111.44
  6. Step 6: Final answer
    x = 9,858.10

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Double scale
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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.