Home / 11,397.35-15,729.68-6,681.62

Finding the Fourth Proportional to 11,397.35, 15,729.68 and 6,681.62

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Solution

The fourth proportional to 11,397.35, 15,729.68 and 6,681.62 is: 9,221.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,397.35 : 15,729.68 = 6,681.62 : x
  2. Step 2: Convert to fraction form
    11,397.35/15,729.68 = 6,681.62/x
  3. Step 3: Cross multiply
    11,397.35x = 15,729.68 × 6,681.62
  4. Step 4: Simplify right side
    11,397.35x = 105,099,744.48
  5. Step 5: Solve for x
    x = 105,099,744.48/11,397.35
  6. Step 6: Final answer
    x = 9,221.42

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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.