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Finding the Fourth Proportional to 23,053.35, 31,813.31 and 12,981.92

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Solution

The fourth proportional to 23,053.35, 31,813.31 and 12,981.92 is: 17,914.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,053.35 : 31,813.31 = 12,981.92 : x
  2. Step 2: Convert to fraction form
    23,053.35/31,813.31 = 12,981.92/x
  3. Step 3: Cross multiply
    23,053.35x = 31,813.31 × 12,981.92
  4. Step 4: Simplify right side
    23,053.35x = 412,997,718.74
  5. Step 5: Solve for x
    x = 412,997,718.74/23,053.35
  6. Step 6: Final answer
    x = 17,914.86

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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.