Home / 18,139.72-27,208.57-5,489.28

Finding the Fourth Proportional to 18,139.72, 27,208.57 and 5,489.28

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Solution

The fourth proportional to 18,139.72, 27,208.57 and 5,489.28 is: 8,233.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,139.72 : 27,208.57 = 5,489.28 : x
  2. Step 2: Convert to fraction form
    18,139.72/27,208.57 = 5,489.28/x
  3. Step 3: Cross multiply
    18,139.72x = 27,208.57 × 5,489.28
  4. Step 4: Simplify right side
    18,139.72x = 149,355,459.13
  5. Step 5: Solve for x
    x = 149,355,459.13/18,139.72
  6. Step 6: Final answer
    x = 8,233.61

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1.5x scale

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.