Home / 12,087.28-18,138.60-5,161.84

Finding the Fourth Proportional to 12,087.28, 18,138.60 and 5,161.84

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Solution

The fourth proportional to 12,087.28, 18,138.60 and 5,161.84 is: 7,746.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,087.28 : 18,138.60 = 5,161.84 : x
  2. Step 2: Convert to fraction form
    12,087.28/18,138.60 = 5,161.84/x
  3. Step 3: Cross multiply
    12,087.28x = 18,138.60 × 5,161.84
  4. Step 4: Simplify right side
    12,087.28x = 93,628,551.02
  5. Step 5: Solve for x
    x = 93,628,551.02/12,087.28
  6. Step 6: Final answer
    x = 7,746.04

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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.