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Finding the Fourth Proportional to 10,086.60, 15,129.90 and 3,066.60

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Solution

The fourth proportional to 10,086.60, 15,129.90 and 3,066.60 is: 4,599.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,086.60 : 15,129.90 = 3,066.60 : x
  2. Step 2: Convert to fraction form
    10,086.60/15,129.90 = 3,066.60/x
  3. Step 3: Cross multiply
    10,086.60x = 15,129.90 × 3,066.60
  4. Step 4: Simplify right side
    10,086.60x = 46,397,351.34
  5. Step 5: Solve for x
    x = 46,397,351.34/10,086.60
  6. Step 6: Final answer
    x = 4,599.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.