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Finding the Fourth Proportional to 9,936.19, 13,725.93 and 9,411.31

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Solution

The fourth proportional to 9,936.19, 13,725.93 and 9,411.31 is: 13,000.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,936.19 : 13,725.93 = 9,411.31 : x
  2. Step 2: Convert to fraction form
    9,936.19/13,725.93 = 9,411.31/x
  3. Step 3: Cross multiply
    9,936.19x = 13,725.93 × 9,411.31
  4. Step 4: Simplify right side
    9,936.19x = 129,178,982.27
  5. Step 5: Solve for x
    x = 129,178,982.27/9,936.19
  6. Step 6: Final answer
    x = 13,000.86

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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.