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Finding the Fourth Proportional to 18,281.10, 27,413.55 and 8,423.40

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Solution

The fourth proportional to 18,281.10, 27,413.55 and 8,423.40 is: 12,631.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,281.10 : 27,413.55 = 8,423.40 : x
  2. Step 2: Convert to fraction form
    18,281.10/27,413.55 = 8,423.40/x
  3. Step 3: Cross multiply
    18,281.10x = 27,413.55 × 8,423.40
  4. Step 4: Simplify right side
    18,281.10x = 230,915,297.07
  5. Step 5: Solve for x
    x = 230,915,297.07/18,281.10
  6. Step 6: Final answer
    x = 12,631.37

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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.