Home / 15,616.45-21,551.20-8,542.87

Finding the Fourth Proportional to 15,616.45, 21,551.20 and 8,542.87

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Solution

The fourth proportional to 15,616.45, 21,551.20 and 8,542.87 is: 11,789.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,616.45 : 21,551.20 = 8,542.87 : x
  2. Step 2: Convert to fraction form
    15,616.45/21,551.20 = 8,542.87/x
  3. Step 3: Cross multiply
    15,616.45x = 21,551.20 × 8,542.87
  4. Step 4: Simplify right side
    15,616.45x = 184,108,949.47
  5. Step 5: Solve for x
    x = 184,108,949.47/15,616.45
  6. Step 6: Final answer
    x = 11,789.42

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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.