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Finding the Fourth Proportional to 11,988.22, 17,973.07 and 8,279.74

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Solution

The fourth proportional to 11,988.22, 17,973.07 and 8,279.74 is: 12,413.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,988.22 : 17,973.07 = 8,279.74 : x
  2. Step 2: Convert to fraction form
    11,988.22/17,973.07 = 8,279.74/x
  3. Step 3: Cross multiply
    11,988.22x = 17,973.07 × 8,279.74
  4. Step 4: Simplify right side
    11,988.22x = 148,812,346.60
  5. Step 5: Solve for x
    x = 148,812,346.60/11,988.22
  6. Step 6: Final answer
    x = 12,413.21

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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.