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Finding the Fourth Proportional to 18,632.80, 27,927.60 and 7,532.20

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Solution

The fourth proportional to 18,632.80, 27,927.60 and 7,532.20 is: 11,289.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,632.80 : 27,927.60 = 7,532.20 : x
  2. Step 2: Convert to fraction form
    18,632.80/27,927.60 = 7,532.20/x
  3. Step 3: Cross multiply
    18,632.80x = 27,927.60 × 7,532.20
  4. Step 4: Simplify right side
    18,632.80x = 210,356,268.72
  5. Step 5: Solve for x
    x = 210,356,268.72/18,632.80
  6. Step 6: Final answer
    x = 11,289.57

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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.