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Finding the Fourth Proportional to 12,061.80, 18,091.08 and 4,276.08

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Solution

The fourth proportional to 12,061.80, 18,091.08 and 4,276.08 is: 6,413.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,061.80 : 18,091.08 = 4,276.08 : x
  2. Step 2: Convert to fraction form
    12,061.80/18,091.08 = 4,276.08/x
  3. Step 3: Cross multiply
    12,061.80x = 18,091.08 × 4,276.08
  4. Step 4: Simplify right side
    12,061.80x = 77,358,905.37
  5. Step 5: Solve for x
    x = 77,358,905.37/12,061.80
  6. Step 6: Final answer
    x = 6,413.55

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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.