Home / 13,319.42-19,979.60-3,959.19

Finding the Fourth Proportional to 13,319.42, 19,979.60 and 3,959.19

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Solution

The fourth proportional to 13,319.42, 19,979.60 and 3,959.19 is: 5,938.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,319.42 : 19,979.60 = 3,959.19 : x
  2. Step 2: Convert to fraction form
    13,319.42/19,979.60 = 3,959.19/x
  3. Step 3: Cross multiply
    13,319.42x = 19,979.60 × 3,959.19
  4. Step 4: Simplify right side
    13,319.42x = 79,103,012.73
  5. Step 5: Solve for x
    x = 79,103,012.73/13,319.42
  6. Step 6: Final answer
    x = 5,938.93

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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.