Home / 15,350.88-21,185.04-8,636.94

Finding the Fourth Proportional to 15,350.88, 21,185.04 and 8,636.94

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Solution

The fourth proportional to 15,350.88, 21,185.04 and 8,636.94 is: 11,919.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,350.88 : 21,185.04 = 8,636.94 : x
  2. Step 2: Convert to fraction form
    15,350.88/21,185.04 = 8,636.94/x
  3. Step 3: Cross multiply
    15,350.88x = 21,185.04 × 8,636.94
  4. Step 4: Simplify right side
    15,350.88x = 182,973,919.38
  5. Step 5: Solve for x
    x = 182,973,919.38/15,350.88
  6. Step 6: Final answer
    x = 11,919.44

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Half scale
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Double scale
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Similar ratio
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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.