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Finding the Fourth Proportional to 20,483.66, 30,726.09 and 8,003.18

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Solution

The fourth proportional to 20,483.66, 30,726.09 and 8,003.18 is: 12,005.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,483.66 : 30,726.09 = 8,003.18 : x
  2. Step 2: Convert to fraction form
    20,483.66/30,726.09 = 8,003.18/x
  3. Step 3: Cross multiply
    20,483.66x = 30,726.09 × 8,003.18
  4. Step 4: Simplify right side
    20,483.66x = 245,906,428.97
  5. Step 5: Solve for x
    x = 245,906,428.97/20,483.66
  6. Step 6: Final answer
    x = 12,005.00

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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.