Home / 15,616.40-21,550.66-8,542.84

Finding the Fourth Proportional to 15,616.40, 21,550.66 and 8,542.84

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Solution

The fourth proportional to 15,616.40, 21,550.66 and 8,542.84 is: 11,789.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,616.40 : 21,550.66 = 8,542.84 : x
  2. Step 2: Convert to fraction form
    15,616.40/21,550.66 = 8,542.84/x
  3. Step 3: Cross multiply
    15,616.40x = 21,550.66 × 8,542.84
  4. Step 4: Simplify right side
    15,616.40x = 184,103,840.27
  5. Step 5: Solve for x
    x = 184,103,840.27/15,616.40
  6. Step 6: Final answer
    x = 11,789.13

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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.