Home / 13,608.14-20,420.38-5,816.95

Finding the Fourth Proportional to 13,608.14, 20,420.38 and 5,816.95

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Solution

The fourth proportional to 13,608.14, 20,420.38 and 5,816.95 is: 8,728.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,608.14 : 20,420.38 = 5,816.95 : x
  2. Step 2: Convert to fraction form
    13,608.14/20,420.38 = 5,816.95/x
  3. Step 3: Cross multiply
    13,608.14x = 20,420.38 × 5,816.95
  4. Step 4: Simplify right side
    13,608.14x = 118,784,329.44
  5. Step 5: Solve for x
    x = 118,784,329.44/13,608.14
  6. Step 6: Final answer
    x = 8,728.92

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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.