Home / 12,172.52-18,258.48-6,660.87

Finding the Fourth Proportional to 12,172.52, 18,258.48 and 6,660.87

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Solution

The fourth proportional to 12,172.52, 18,258.48 and 6,660.87 is: 9,991.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,172.52 : 18,258.48 = 6,660.87 : x
  2. Step 2: Convert to fraction form
    12,172.52/18,258.48 = 6,660.87/x
  3. Step 3: Cross multiply
    12,172.52x = 18,258.48 × 6,660.87
  4. Step 4: Simplify right side
    12,172.52x = 121,617,361.68
  5. Step 5: Solve for x
    x = 121,617,361.68/12,172.52
  6. Step 6: Final answer
    x = 9,991.14

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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.