Home / 13,405.59-20,109.35-3,544.75

Finding the Fourth Proportional to 13,405.59, 20,109.35 and 3,544.75

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Solution

The fourth proportional to 13,405.59, 20,109.35 and 3,544.75 is: 5,317.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,405.59 : 20,109.35 = 3,544.75 : x
  2. Step 2: Convert to fraction form
    13,405.59/20,109.35 = 3,544.75/x
  3. Step 3: Cross multiply
    13,405.59x = 20,109.35 × 3,544.75
  4. Step 4: Simplify right side
    13,405.59x = 71,282,618.41
  5. Step 5: Solve for x
    x = 71,282,618.41/13,405.59
  6. Step 6: Final answer
    x = 5,317.38

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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.