Home / 18,171.66-27,222.93-10,356.78

Finding the Fourth Proportional to 18,171.66, 27,222.93 and 10,356.78

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Solution

The fourth proportional to 18,171.66, 27,222.93 and 10,356.78 is: 15,515.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,171.66 : 27,222.93 = 10,356.78 : x
  2. Step 2: Convert to fraction form
    18,171.66/27,222.93 = 10,356.78/x
  3. Step 3: Cross multiply
    18,171.66x = 27,222.93 × 10,356.78
  4. Step 4: Simplify right side
    18,171.66x = 281,941,896.97
  5. Step 5: Solve for x
    x = 281,941,896.97/18,171.66
  6. Step 6: Final answer
    x = 15,515.47

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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.