Home / 18,351.20-27,520.32-6,661.28

Finding the Fourth Proportional to 18,351.20, 27,520.32 and 6,661.28

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Solution

The fourth proportional to 18,351.20, 27,520.32 and 6,661.28 is: 9,989.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,351.20 : 27,520.32 = 6,661.28 : x
  2. Step 2: Convert to fraction form
    18,351.20/27,520.32 = 6,661.28/x
  3. Step 3: Cross multiply
    18,351.20x = 27,520.32 × 6,661.28
  4. Step 4: Simplify right side
    18,351.20x = 183,320,557.21
  5. Step 5: Solve for x
    x = 183,320,557.21/18,351.20
  6. Step 6: Final answer
    x = 9,989.57

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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.