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Finding the Fourth Proportional to 18,164.50, 27,246.76 and 7,220.50

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Solution

The fourth proportional to 18,164.50, 27,246.76 and 7,220.50 is: 10,830.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,164.50 : 27,246.76 = 7,220.50 : x
  2. Step 2: Convert to fraction form
    18,164.50/27,246.76 = 7,220.50/x
  3. Step 3: Cross multiply
    18,164.50x = 27,246.76 × 7,220.50
  4. Step 4: Simplify right side
    18,164.50x = 196,735,230.58
  5. Step 5: Solve for x
    x = 196,735,230.58/18,164.50
  6. Step 6: Final answer
    x = 10,830.75

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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.