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Finding the Fourth Proportional to 10,929.80, 16,413.90 and 10,584.20

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Solution

The fourth proportional to 10,929.80, 16,413.90 and 10,584.20 is: 15,894.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,929.80 : 16,413.90 = 10,584.20 : x
  2. Step 2: Convert to fraction form
    10,929.80/16,413.90 = 10,584.20/x
  3. Step 3: Cross multiply
    10,929.80x = 16,413.90 × 10,584.20
  4. Step 4: Simplify right side
    10,929.80x = 173,728,000.38
  5. Step 5: Solve for x
    x = 173,728,000.38/10,929.80
  6. Step 6: Final answer
    x = 15,894.89

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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.