Home / 36,084.05-54,132.29-12,390.47

Finding the Fourth Proportional to 36,084.05, 54,132.29 and 12,390.47

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Solution

The fourth proportional to 36,084.05, 54,132.29 and 12,390.47 is: 18,587.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,084.05 : 54,132.29 = 12,390.47 : x
  2. Step 2: Convert to fraction form
    36,084.05/54,132.29 = 12,390.47/x
  3. Step 3: Cross multiply
    36,084.05x = 54,132.29 × 12,390.47
  4. Step 4: Simplify right side
    36,084.05x = 670,724,453.32
  5. Step 5: Solve for x
    x = 670,724,453.32/36,084.05
  6. Step 6: Final answer
    x = 18,587.84

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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.