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Finding the Fourth Proportional to 18,631.22, 27,948.65 and 6,941.70

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Solution

The fourth proportional to 18,631.22, 27,948.65 and 6,941.70 is: 10,413.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,631.22 : 27,948.65 = 6,941.70 : x
  2. Step 2: Convert to fraction form
    18,631.22/27,948.65 = 6,941.70/x
  3. Step 3: Cross multiply
    18,631.22x = 27,948.65 × 6,941.70
  4. Step 4: Simplify right side
    18,631.22x = 194,011,109.00
  5. Step 5: Solve for x
    x = 194,011,109.00/18,631.22
  6. Step 6: Final answer
    x = 10,413.23

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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.