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Finding the Fourth Proportional to 15,959.57, 22,022.69 and 8,789.40

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Solution

The fourth proportional to 15,959.57, 22,022.69 and 8,789.40 is: 12,128.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,959.57 : 22,022.69 = 8,789.40 : x
  2. Step 2: Convert to fraction form
    15,959.57/22,022.69 = 8,789.40/x
  3. Step 3: Cross multiply
    15,959.57x = 22,022.69 × 8,789.40
  4. Step 4: Simplify right side
    15,959.57x = 193,566,187.54
  5. Step 5: Solve for x
    x = 193,566,187.54/15,959.57
  6. Step 6: Final answer
    x = 12,128.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.