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Finding the Fourth Proportional to 20,335.77, 30,508.44 and 6,484.77

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Solution

The fourth proportional to 20,335.77, 30,508.44 and 6,484.77 is: 9,728.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,335.77 : 30,508.44 = 6,484.77 : x
  2. Step 2: Convert to fraction form
    20,335.77/30,508.44 = 6,484.77/x
  3. Step 3: Cross multiply
    20,335.77x = 30,508.44 × 6,484.77
  4. Step 4: Simplify right side
    20,335.77x = 197,840,216.46
  5. Step 5: Solve for x
    x = 197,840,216.46/20,335.77
  6. Step 6: Final answer
    x = 9,728.68

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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.