Home / 18,266.81-27,398.07-5,120.24

Finding the Fourth Proportional to 18,266.81, 27,398.07 and 5,120.24

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Solution

The fourth proportional to 18,266.81, 27,398.07 and 5,120.24 is: 7,679.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,266.81 : 27,398.07 = 5,120.24 : x
  2. Step 2: Convert to fraction form
    18,266.81/27,398.07 = 5,120.24/x
  3. Step 3: Cross multiply
    18,266.81x = 27,398.07 × 5,120.24
  4. Step 4: Simplify right side
    18,266.81x = 140,284,693.94
  5. Step 5: Solve for x
    x = 140,284,693.94/18,266.81
  6. Step 6: Final answer
    x = 7,679.76

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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.