Home / 13,799.80-20,699.70-3,411.55

Finding the Fourth Proportional to 13,799.80, 20,699.70 and 3,411.55

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Solution

The fourth proportional to 13,799.80, 20,699.70 and 3,411.55 is: 5,117.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,799.80 : 20,699.70 = 3,411.55 : x
  2. Step 2: Convert to fraction form
    13,799.80/20,699.70 = 3,411.55/x
  3. Step 3: Cross multiply
    13,799.80x = 20,699.70 × 3,411.55
  4. Step 4: Simplify right side
    13,799.80x = 70,618,061.54
  5. Step 5: Solve for x
    x = 70,618,061.54/13,799.80
  6. Step 6: Final answer
    x = 5,117.33

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Similar ratio
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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.