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Finding the Fourth Proportional to 43,476.49, 65,209.29 and 13,891.87

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Solution

The fourth proportional to 43,476.49, 65,209.29 and 13,891.87 is: 20,836.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,476.49 : 65,209.29 = 13,891.87 : x
  2. Step 2: Convert to fraction form
    43,476.49/65,209.29 = 13,891.87/x
  3. Step 3: Cross multiply
    43,476.49x = 65,209.29 × 13,891.87
  4. Step 4: Simplify right side
    43,476.49x = 905,878,979.47
  5. Step 5: Solve for x
    x = 905,878,979.47/43,476.49
  6. Step 6: Final answer
    x = 20,836.07

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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.