Home / 13,725.61-18,934.36-8,681.34

Finding the Fourth Proportional to 13,725.61, 18,934.36 and 8,681.34

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Solution

The fourth proportional to 13,725.61, 18,934.36 and 8,681.34 is: 11,975.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,725.61 : 18,934.36 = 8,681.34 : x
  2. Step 2: Convert to fraction form
    13,725.61/18,934.36 = 8,681.34/x
  3. Step 3: Cross multiply
    13,725.61x = 18,934.36 × 8,681.34
  4. Step 4: Simplify right side
    13,725.61x = 164,375,616.84
  5. Step 5: Solve for x
    x = 164,375,616.84/13,725.61
  6. Step 6: Final answer
    x = 11,975.83

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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.