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Finding the Fourth Proportional to 22,661.94, 31,274.43 and 12,590.31

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Solution

The fourth proportional to 22,661.94, 31,274.43 and 12,590.31 is: 17,375.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,661.94 : 31,274.43 = 12,590.31 : x
  2. Step 2: Convert to fraction form
    22,661.94/31,274.43 = 12,590.31/x
  3. Step 3: Cross multiply
    22,661.94x = 31,274.43 × 12,590.31
  4. Step 4: Simplify right side
    22,661.94x = 393,754,768.77
  5. Step 5: Solve for x
    x = 393,754,768.77/22,661.94
  6. Step 6: Final answer
    x = 17,375.16

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