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Finding the Fourth Proportional to 13,043.11, 17,999.80 and 7,936.87

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Solution

The fourth proportional to 13,043.11, 17,999.80 and 7,936.87 is: 10,953.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,043.11 : 17,999.80 = 7,936.87 : x
  2. Step 2: Convert to fraction form
    13,043.11/17,999.80 = 7,936.87/x
  3. Step 3: Cross multiply
    13,043.11x = 17,999.80 × 7,936.87
  4. Step 4: Simplify right side
    13,043.11x = 142,862,072.63
  5. Step 5: Solve for x
    x = 142,862,072.63/13,043.11
  6. Step 6: Final answer
    x = 10,953.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.