Home / 19,146.89-28,725.78-13,887.15

Finding the Fourth Proportional to 19,146.89, 28,725.78 and 13,887.15

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Solution

The fourth proportional to 19,146.89, 28,725.78 and 13,887.15 is: 20,834.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,146.89 : 28,725.78 = 13,887.15 : x
  2. Step 2: Convert to fraction form
    19,146.89/28,725.78 = 13,887.15/x
  3. Step 3: Cross multiply
    19,146.89x = 28,725.78 × 13,887.15
  4. Step 4: Simplify right side
    19,146.89x = 398,919,215.73
  5. Step 5: Solve for x
    x = 398,919,215.73/19,146.89
  6. Step 6: Final answer
    x = 20,834.68

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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.