Home / 28,921.78-43,385.73-9,195.72

Finding the Fourth Proportional to 28,921.78, 43,385.73 and 9,195.72

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Solution

The fourth proportional to 28,921.78, 43,385.73 and 9,195.72 is: 13,794.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,921.78 : 43,385.73 = 9,195.72 : x
  2. Step 2: Convert to fraction form
    28,921.78/43,385.73 = 9,195.72/x
  3. Step 3: Cross multiply
    28,921.78x = 43,385.73 × 9,195.72
  4. Step 4: Simplify right side
    28,921.78x = 398,963,025.08
  5. Step 5: Solve for x
    x = 398,963,025.08/28,921.78
  6. Step 6: Final answer
    x = 13,794.55

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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.