Home / 18,121.70-27,182.55-4,975.40

Finding the Fourth Proportional to 18,121.70, 27,182.55 and 4,975.40

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Solution

The fourth proportional to 18,121.70, 27,182.55 and 4,975.40 is: 7,463.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,121.70 : 27,182.55 = 4,975.40 : x
  2. Step 2: Convert to fraction form
    18,121.70/27,182.55 = 4,975.40/x
  3. Step 3: Cross multiply
    18,121.70x = 27,182.55 × 4,975.40
  4. Step 4: Simplify right side
    18,121.70x = 135,244,059.27
  5. Step 5: Solve for x
    x = 135,244,059.27/18,121.70
  6. Step 6: Final answer
    x = 7,463.10

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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.