Home / 18,936.36-28,403.50-5,788.72

Finding the Fourth Proportional to 18,936.36, 28,403.50 and 5,788.72

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Solution

The fourth proportional to 18,936.36, 28,403.50 and 5,788.72 is: 8,682.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,936.36 : 28,403.50 = 5,788.72 : x
  2. Step 2: Convert to fraction form
    18,936.36/28,403.50 = 5,788.72/x
  3. Step 3: Cross multiply
    18,936.36x = 28,403.50 × 5,788.72
  4. Step 4: Simplify right side
    18,936.36x = 164,419,908.52
  5. Step 5: Solve for x
    x = 164,419,908.52/18,936.36
  6. Step 6: Final answer
    x = 8,682.76

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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.