Home / 13,335.48-20,015.78-6,766.38

Finding the Fourth Proportional to 13,335.48, 20,015.78 and 6,766.38

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Solution

The fourth proportional to 13,335.48, 20,015.78 and 6,766.38 is: 10,155.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,335.48 : 20,015.78 = 6,766.38 : x
  2. Step 2: Convert to fraction form
    13,335.48/20,015.78 = 6,766.38/x
  3. Step 3: Cross multiply
    13,335.48x = 20,015.78 × 6,766.38
  4. Step 4: Simplify right side
    13,335.48x = 135,434,452.76
  5. Step 5: Solve for x
    x = 135,434,452.76/13,335.48
  6. Step 6: Final answer
    x = 10,155.95

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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.