Home / 13,339.85-20,010.79-3,979.14

Finding the Fourth Proportional to 13,339.85, 20,010.79 and 3,979.14

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Solution

The fourth proportional to 13,339.85, 20,010.79 and 3,979.14 is: 5,969.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,339.85 : 20,010.79 = 3,979.14 : x
  2. Step 2: Convert to fraction form
    13,339.85/20,010.79 = 3,979.14/x
  3. Step 3: Cross multiply
    13,339.85x = 20,010.79 × 3,979.14
  4. Step 4: Simplify right side
    13,339.85x = 79,625,624.92
  5. Step 5: Solve for x
    x = 79,625,624.92/13,339.85
  6. Step 6: Final answer
    x = 5,969.00

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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.