Home / 18,949.88-28,449.48-12,737.54

Finding the Fourth Proportional to 18,949.88, 28,449.48 and 12,737.54

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Solution

The fourth proportional to 18,949.88, 28,449.48 and 12,737.54 is: 19,122.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,949.88 : 28,449.48 = 12,737.54 : x
  2. Step 2: Convert to fraction form
    18,949.88/28,449.48 = 12,737.54/x
  3. Step 3: Cross multiply
    18,949.88x = 28,449.48 × 12,737.54
  4. Step 4: Simplify right side
    18,949.88x = 362,376,389.48
  5. Step 5: Solve for x
    x = 362,376,389.48/18,949.88
  6. Step 6: Final answer
    x = 19,122.89

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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.