Home / 13,544.47-20,318.65-4,185.30

Finding the Fourth Proportional to 13,544.47, 20,318.65 and 4,185.30

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Solution

The fourth proportional to 13,544.47, 20,318.65 and 4,185.30 is: 6,278.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,544.47 : 20,318.65 = 4,185.30 : x
  2. Step 2: Convert to fraction form
    13,544.47/20,318.65 = 4,185.30/x
  3. Step 3: Cross multiply
    13,544.47x = 20,318.65 × 4,185.30
  4. Step 4: Simplify right side
    13,544.47x = 85,039,675.72
  5. Step 5: Solve for x
    x = 85,039,675.72/13,544.47
  6. Step 6: Final answer
    x = 6,278.55

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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.