Home / 18,931.22-28,396.83-5,080.22

Finding the Fourth Proportional to 18,931.22, 28,396.83 and 5,080.22

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Solution

The fourth proportional to 18,931.22, 28,396.83 and 5,080.22 is: 7,620.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,931.22 : 28,396.83 = 5,080.22 : x
  2. Step 2: Convert to fraction form
    18,931.22/28,396.83 = 5,080.22/x
  3. Step 3: Cross multiply
    18,931.22x = 28,396.83 × 5,080.22
  4. Step 4: Simplify right side
    18,931.22x = 144,262,098.68
  5. Step 5: Solve for x
    x = 144,262,098.68/18,931.22
  6. Step 6: Final answer
    x = 7,620.33

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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.