Home / 18,538.66-27,806.64-5,390.34

Finding the Fourth Proportional to 18,538.66, 27,806.64 and 5,390.34

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Solution

The fourth proportional to 18,538.66, 27,806.64 and 5,390.34 is: 8,085.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,538.66 : 27,806.64 = 5,390.34 : x
  2. Step 2: Convert to fraction form
    18,538.66/27,806.64 = 5,390.34/x
  3. Step 3: Cross multiply
    18,538.66x = 27,806.64 × 5,390.34
  4. Step 4: Simplify right side
    18,538.66x = 149,887,243.86
  5. Step 5: Solve for x
    x = 149,887,243.86/18,538.66
  6. Step 6: Final answer
    x = 8,085.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.