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Finding the Fourth Proportional to 20,413.66, 30,612.59 and 7,932.04

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Solution

The fourth proportional to 20,413.66, 30,612.59 and 7,932.04 is: 11,894.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,413.66 : 30,612.59 = 7,932.04 : x
  2. Step 2: Convert to fraction form
    20,413.66/30,612.59 = 7,932.04/x
  3. Step 3: Cross multiply
    20,413.66x = 30,612.59 × 7,932.04
  4. Step 4: Simplify right side
    20,413.66x = 242,820,374.13
  5. Step 5: Solve for x
    x = 242,820,374.13/20,413.66
  6. Step 6: Final answer
    x = 11,894.99

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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.