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Finding the Fourth Proportional to 36,009.60, 54,016.80 and 12,316.80

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Solution

The fourth proportional to 36,009.60, 54,016.80 and 12,316.80 is: 18,476.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,009.60 : 54,016.80 = 12,316.80 : x
  2. Step 2: Convert to fraction form
    36,009.60/54,016.80 = 12,316.80/x
  3. Step 3: Cross multiply
    36,009.60x = 54,016.80 × 12,316.80
  4. Step 4: Simplify right side
    36,009.60x = 665,314,122.24
  5. Step 5: Solve for x
    x = 665,314,122.24/36,009.60
  6. Step 6: Final answer
    x = 18,476.02

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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.