Home / 13,340.55-20,011.82-3,979.83

Finding the Fourth Proportional to 13,340.55, 20,011.82 and 3,979.83

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Solution

The fourth proportional to 13,340.55, 20,011.82 and 3,979.83 is: 5,970.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,340.55 : 20,011.82 = 3,979.83 : x
  2. Step 2: Convert to fraction form
    13,340.55/20,011.82 = 3,979.83/x
  3. Step 3: Cross multiply
    13,340.55x = 20,011.82 × 3,979.83
  4. Step 4: Simplify right side
    13,340.55x = 79,643,521.63
  5. Step 5: Solve for x
    x = 79,643,521.63/13,340.55
  6. Step 6: Final answer
    x = 5,970.04

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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.