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Finding the Fourth Proportional to 13,803.93, 20,705.63 and 3,943.13

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Solution

The fourth proportional to 13,803.93, 20,705.63 and 3,943.13 is: 5,914.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,803.93 : 20,705.63 = 3,943.13 : x
  2. Step 2: Convert to fraction form
    13,803.93/20,705.63 = 3,943.13/x
  3. Step 3: Cross multiply
    13,803.93x = 20,705.63 × 3,943.13
  4. Step 4: Simplify right side
    13,803.93x = 81,644,867.58
  5. Step 5: Solve for x
    x = 81,644,867.58/13,803.93
  6. Step 6: Final answer
    x = 5,914.61

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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.