Home / 18,979.49-28,486.62-9,625.97

Finding the Fourth Proportional to 18,979.49, 28,486.62 and 9,625.97

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Solution

The fourth proportional to 18,979.49, 28,486.62 and 9,625.97 is: 14,447.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,979.49 : 28,486.62 = 9,625.97 : x
  2. Step 2: Convert to fraction form
    18,979.49/28,486.62 = 9,625.97/x
  3. Step 3: Cross multiply
    18,979.49x = 28,486.62 × 9,625.97
  4. Step 4: Simplify right side
    18,979.49x = 274,211,420.74
  5. Step 5: Solve for x
    x = 274,211,420.74/18,979.49
  6. Step 6: Final answer
    x = 14,447.77

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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.