Home / 13,694.10-18,897.48-7,725.42

Finding the Fourth Proportional to 13,694.10, 18,897.48 and 7,725.42

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Solution

The fourth proportional to 13,694.10, 18,897.48 and 7,725.42 is: 10,660.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,694.10 : 18,897.48 = 7,725.42 : x
  2. Step 2: Convert to fraction form
    13,694.10/18,897.48 = 7,725.42/x
  3. Step 3: Cross multiply
    13,694.10x = 18,897.48 × 7,725.42
  4. Step 4: Simplify right side
    13,694.10x = 145,990,969.94
  5. Step 5: Solve for x
    x = 145,990,969.94/13,694.10
  6. Step 6: Final answer
    x = 10,660.87

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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.