Home / 13,992.08-20,990.04-5,106.24

Finding the Fourth Proportional to 13,992.08, 20,990.04 and 5,106.24

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Solution

The fourth proportional to 13,992.08, 20,990.04 and 5,106.24 is: 7,660.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,992.08 : 20,990.04 = 5,106.24 : x
  2. Step 2: Convert to fraction form
    13,992.08/20,990.04 = 5,106.24/x
  3. Step 3: Cross multiply
    13,992.08x = 20,990.04 × 5,106.24
  4. Step 4: Simplify right side
    13,992.08x = 107,180,162.70
  5. Step 5: Solve for x
    x = 107,180,162.70/13,992.08
  6. Step 6: Final answer
    x = 7,660.06

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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.