Home / 18,645.48-27,969.66-5,319.42

Finding the Fourth Proportional to 18,645.48, 27,969.66 and 5,319.42

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Solution

The fourth proportional to 18,645.48, 27,969.66 and 5,319.42 is: 7,979.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,645.48 : 27,969.66 = 5,319.42 : x
  2. Step 2: Convert to fraction form
    18,645.48/27,969.66 = 5,319.42/x
  3. Step 3: Cross multiply
    18,645.48x = 27,969.66 × 5,319.42
  4. Step 4: Simplify right side
    18,645.48x = 148,782,368.80
  5. Step 5: Solve for x
    x = 148,782,368.80/18,645.48
  6. Step 6: Final answer
    x = 7,979.54

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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.