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Finding the Fourth Proportional to 20,616.61, 30,926.94 and 5,825.64

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Solution

The fourth proportional to 20,616.61, 30,926.94 and 5,825.64 is: 8,739.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,616.61 : 30,926.94 = 5,825.64 : x
  2. Step 2: Convert to fraction form
    20,616.61/30,926.94 = 5,825.64/x
  3. Step 3: Cross multiply
    20,616.61x = 30,926.94 × 5,825.64
  4. Step 4: Simplify right side
    20,616.61x = 180,169,218.74
  5. Step 5: Solve for x
    x = 180,169,218.74/20,616.61
  6. Step 6: Final answer
    x = 8,739.03

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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.