Home / 22,691.49-31,314.99-12,620.36

Finding the Fourth Proportional to 22,691.49, 31,314.99 and 12,620.36

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Solution

The fourth proportional to 22,691.49, 31,314.99 and 12,620.36 is: 17,416.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,691.49 : 31,314.99 = 12,620.36 : x
  2. Step 2: Convert to fraction form
    22,691.49/31,314.99 = 12,620.36/x
  3. Step 3: Cross multiply
    22,691.49x = 31,314.99 × 12,620.36
  4. Step 4: Simplify right side
    22,691.49x = 395,206,290.62
  5. Step 5: Solve for x
    x = 395,206,290.62/22,691.49
  6. Step 6: Final answer
    x = 17,416.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.