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Finding the Fourth Proportional to 10,661.54, 15,994.61 and 4,087.73

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Solution

The fourth proportional to 10,661.54, 15,994.61 and 4,087.73 is: 6,132.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,661.54 : 15,994.61 = 4,087.73 : x
  2. Step 2: Convert to fraction form
    10,661.54/15,994.61 = 4,087.73/x
  3. Step 3: Cross multiply
    10,661.54x = 15,994.61 × 4,087.73
  4. Step 4: Simplify right side
    10,661.54x = 65,381,615.04
  5. Step 5: Solve for x
    x = 65,381,615.04/10,661.54
  6. Step 6: Final answer
    x = 6,132.48

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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.