Home / 19,255.17-28,845.16-12,661.36

Finding the Fourth Proportional to 19,255.17, 28,845.16 and 12,661.36

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Solution

The fourth proportional to 19,255.17, 28,845.16 and 12,661.36 is: 18,967.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,255.17 : 28,845.16 = 12,661.36 : x
  2. Step 2: Convert to fraction form
    19,255.17/28,845.16 = 12,661.36/x
  3. Step 3: Cross multiply
    19,255.17x = 28,845.16 × 12,661.36
  4. Step 4: Simplify right side
    19,255.17x = 365,219,084.73
  5. Step 5: Solve for x
    x = 365,219,084.73/19,255.17
  6. Step 6: Final answer
    x = 18,967.33

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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.