Home / 18,316.90-27,480.50-5,169.39

Finding the Fourth Proportional to 18,316.90, 27,480.50 and 5,169.39

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Solution

The fourth proportional to 18,316.90, 27,480.50 and 5,169.39 is: 7,755.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,316.90 : 27,480.50 = 5,169.39 : x
  2. Step 2: Convert to fraction form
    18,316.90/27,480.50 = 5,169.39/x
  3. Step 3: Cross multiply
    18,316.90x = 27,480.50 × 5,169.39
  4. Step 4: Simplify right side
    18,316.90x = 142,057,421.90
  5. Step 5: Solve for x
    x = 142,057,421.90/18,316.90
  6. Step 6: Final answer
    x = 7,755.54

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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.