Home / 13,990.77-20,993.19-8,724.42

Finding the Fourth Proportional to 13,990.77, 20,993.19 and 8,724.42

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Solution

The fourth proportional to 13,990.77, 20,993.19 and 8,724.42 is: 13,091.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,990.77 : 20,993.19 = 8,724.42 : x
  2. Step 2: Convert to fraction form
    13,990.77/20,993.19 = 8,724.42/x
  3. Step 3: Cross multiply
    13,990.77x = 20,993.19 × 8,724.42
  4. Step 4: Simplify right side
    13,990.77x = 183,153,406.70
  5. Step 5: Solve for x
    x = 183,153,406.70/13,990.77
  6. Step 6: Final answer
    x = 13,091.02

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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.