Home / 13,825.20-20,737.80-9,447.60

Finding the Fourth Proportional to 13,825.20, 20,737.80 and 9,447.60

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Solution

The fourth proportional to 13,825.20, 20,737.80 and 9,447.60 is: 14,171.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,825.20 : 20,737.80 = 9,447.60 : x
  2. Step 2: Convert to fraction form
    13,825.20/20,737.80 = 9,447.60/x
  3. Step 3: Cross multiply
    13,825.20x = 20,737.80 × 9,447.60
  4. Step 4: Simplify right side
    13,825.20x = 195,922,439.28
  5. Step 5: Solve for x
    x = 195,922,439.28/13,825.20
  6. Step 6: Final answer
    x = 14,171.40

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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.