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Finding the Fourth Proportional to 15,822.87, 21,834.84 and 8,652.59

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Solution

The fourth proportional to 15,822.87, 21,834.84 and 8,652.59 is: 11,940.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,822.87 : 21,834.84 = 8,652.59 : x
  2. Step 2: Convert to fraction form
    15,822.87/21,834.84 = 8,652.59/x
  3. Step 3: Cross multiply
    15,822.87x = 21,834.84 × 8,652.59
  4. Step 4: Simplify right side
    15,822.87x = 188,927,918.24
  5. Step 5: Solve for x
    x = 188,927,918.24/15,822.87
  6. Step 6: Final answer
    x = 11,940.18

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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.