Home / 18,121.23-27,180.63-4,972.50

Finding the Fourth Proportional to 18,121.23, 27,180.63 and 4,972.50

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Solution

The fourth proportional to 18,121.23, 27,180.63 and 4,972.50 is: 7,458.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,121.23 : 27,180.63 = 4,972.50 : x
  2. Step 2: Convert to fraction form
    18,121.23/27,180.63 = 4,972.50/x
  3. Step 3: Cross multiply
    18,121.23x = 27,180.63 × 4,972.50
  4. Step 4: Simplify right side
    18,121.23x = 135,155,682.68
  5. Step 5: Solve for x
    x = 135,155,682.68/18,121.23
  6. Step 6: Final answer
    x = 7,458.42

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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.