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Finding the Fourth Proportional to 12,660.50, 18,994.85 and 6,087.20

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Solution

The fourth proportional to 12,660.50, 18,994.85 and 6,087.20 is: 9,132.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,660.50 : 18,994.85 = 6,087.20 : x
  2. Step 2: Convert to fraction form
    12,660.50/18,994.85 = 6,087.20/x
  3. Step 3: Cross multiply
    12,660.50x = 18,994.85 × 6,087.20
  4. Step 4: Simplify right side
    12,660.50x = 115,625,325.51
  5. Step 5: Solve for x
    x = 115,625,325.51/12,660.50
  6. Step 6: Final answer
    x = 9,132.76

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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.