Home / 13,339.46-20,012.73-3,979.51

Finding the Fourth Proportional to 13,339.46, 20,012.73 and 3,979.51

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Solution

The fourth proportional to 13,339.46, 20,012.73 and 3,979.51 is: 5,970.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,339.46 : 20,012.73 = 3,979.51 : x
  2. Step 2: Convert to fraction form
    13,339.46/20,012.73 = 3,979.51/x
  3. Step 3: Cross multiply
    13,339.46x = 20,012.73 × 3,979.51
  4. Step 4: Simplify right side
    13,339.46x = 79,640,859.16
  5. Step 5: Solve for x
    x = 79,640,859.16/13,339.46
  6. Step 6: Final answer
    x = 5,970.32

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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.