Home / 19,078.08-28,622.20-7,981.04

Finding the Fourth Proportional to 19,078.08, 28,622.20 and 7,981.04

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Solution

The fourth proportional to 19,078.08, 28,622.20 and 7,981.04 is: 11,973.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,078.08 : 28,622.20 = 7,981.04 : x
  2. Step 2: Convert to fraction form
    19,078.08/28,622.20 = 7,981.04/x
  3. Step 3: Cross multiply
    19,078.08x = 28,622.20 × 7,981.04
  4. Step 4: Simplify right side
    19,078.08x = 228,434,923.09
  5. Step 5: Solve for x
    x = 228,434,923.09/19,078.08
  6. Step 6: Final answer
    x = 11,973.69

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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.