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Finding the Fourth Proportional to 15,616.16, 21,550.81 and 8,542.59

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Solution

The fourth proportional to 15,616.16, 21,550.81 and 8,542.59 is: 11,789.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,616.16 : 21,550.81 = 8,542.59 : x
  2. Step 2: Convert to fraction form
    15,616.16/21,550.81 = 8,542.59/x
  3. Step 3: Cross multiply
    15,616.16x = 21,550.81 × 8,542.59
  4. Step 4: Simplify right side
    15,616.16x = 184,099,734.00
  5. Step 5: Solve for x
    x = 184,099,734.00/15,616.16
  6. Step 6: Final answer
    x = 11,789.05

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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.