Home / 18,971.04-28,458.12-4,930.92

Finding the Fourth Proportional to 18,971.04, 28,458.12 and 4,930.92

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Solution

The fourth proportional to 18,971.04, 28,458.12 and 4,930.92 is: 7,396.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,971.04 : 28,458.12 = 4,930.92 : x
  2. Step 2: Convert to fraction form
    18,971.04/28,458.12 = 4,930.92/x
  3. Step 3: Cross multiply
    18,971.04x = 28,458.12 × 4,930.92
  4. Step 4: Simplify right side
    18,971.04x = 140,324,713.07
  5. Step 5: Solve for x
    x = 140,324,713.07/18,971.04
  6. Step 6: Final answer
    x = 7,396.79

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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.