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Finding the Fourth Proportional to 20,484.86, 30,725.91 and 5,693.90

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Solution

The fourth proportional to 20,484.86, 30,725.91 and 5,693.90 is: 8,540.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,484.86 : 30,725.91 = 5,693.90 : x
  2. Step 2: Convert to fraction form
    20,484.86/30,725.91 = 5,693.90/x
  3. Step 3: Cross multiply
    20,484.86x = 30,725.91 × 5,693.90
  4. Step 4: Simplify right side
    20,484.86x = 174,950,105.32
  5. Step 5: Solve for x
    x = 174,950,105.32/20,484.86
  6. Step 6: Final answer
    x = 8,540.46

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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.