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Finding the Fourth Proportional to 15,055, 20,776.62 and 9,086.56

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Solution

The fourth proportional to 15,055, 20,776.62 and 9,086.56 is: 12,539.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,055 : 20,776.62 = 9,086.56 : x
  2. Step 2: Convert to fraction form
    15,055/20,776.62 = 9,086.56/x
  3. Step 3: Cross multiply
    15,055x = 20,776.62 × 9,086.56
  4. Step 4: Simplify right side
    15,055x = 188,788,004.23
  5. Step 5: Solve for x
    x = 188,788,004.23/15,055
  6. Step 6: Final answer
    x = 12,539.89

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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.