Home / 18,390.37-27,581-5,242.86

Finding the Fourth Proportional to 18,390.37, 27,581 and 5,242.86

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Solution

The fourth proportional to 18,390.37, 27,581 and 5,242.86 is: 7,862.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,390.37 : 27,581 = 5,242.86 : x
  2. Step 2: Convert to fraction form
    18,390.37/27,581 = 5,242.86/x
  3. Step 3: Cross multiply
    18,390.37x = 27,581 × 5,242.86
  4. Step 4: Simplify right side
    18,390.37x = 144,603,321.66
  5. Step 5: Solve for x
    x = 144,603,321.66/18,390.37
  6. Step 6: Final answer
    x = 7,862.99

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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.