Home / 18,399.18-27,603.43-5,251.60

Finding the Fourth Proportional to 18,399.18, 27,603.43 and 5,251.60

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Solution

The fourth proportional to 18,399.18, 27,603.43 and 5,251.60 is: 7,878.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,399.18 : 27,603.43 = 5,251.60 : x
  2. Step 2: Convert to fraction form
    18,399.18/27,603.43 = 5,251.60/x
  3. Step 3: Cross multiply
    18,399.18x = 27,603.43 × 5,251.60
  4. Step 4: Simplify right side
    18,399.18x = 144,962,172.99
  5. Step 5: Solve for x
    x = 144,962,172.99/18,399.18
  6. Step 6: Final answer
    x = 7,878.73

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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.