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Finding the Fourth Proportional to 22,490.90, 31,033.22 and 12,934.12

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Solution

The fourth proportional to 22,490.90, 31,033.22 and 12,934.12 is: 17,846.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,490.90 : 31,033.22 = 12,934.12 : x
  2. Step 2: Convert to fraction form
    22,490.90/31,033.22 = 12,934.12/x
  3. Step 3: Cross multiply
    22,490.90x = 31,033.22 × 12,934.12
  4. Step 4: Simplify right side
    22,490.90x = 401,387,391.47
  5. Step 5: Solve for x
    x = 401,387,391.47/22,490.90
  6. Step 6: Final answer
    x = 17,846.66

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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.