Home / 18,948.88-28,447.98-12,736.54

Finding the Fourth Proportional to 18,948.88, 28,447.98 and 12,736.54

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Solution

The fourth proportional to 18,948.88, 28,447.98 and 12,736.54 is: 19,121.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,948.88 : 28,447.98 = 12,736.54 : x
  2. Step 2: Convert to fraction form
    18,948.88/28,447.98 = 12,736.54/x
  3. Step 3: Cross multiply
    18,948.88x = 28,447.98 × 12,736.54
  4. Step 4: Simplify right side
    18,948.88x = 362,328,835.19
  5. Step 5: Solve for x
    x = 362,328,835.19/18,948.88
  6. Step 6: Final answer
    x = 19,121.39

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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.