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Finding the Fourth Proportional to 17,413.20, 26,119.80 and 12,164.40

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Solution

The fourth proportional to 17,413.20, 26,119.80 and 12,164.40 is: 18,246.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,413.20 : 26,119.80 = 12,164.40 : x
  2. Step 2: Convert to fraction form
    17,413.20/26,119.80 = 12,164.40/x
  3. Step 3: Cross multiply
    17,413.20x = 26,119.80 × 12,164.40
  4. Step 4: Simplify right side
    17,413.20x = 317,731,695.12
  5. Step 5: Solve for x
    x = 317,731,695.12/17,413.20
  6. Step 6: Final answer
    x = 18,246.60

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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.