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Finding the Fourth Proportional to 15,803.73, 21,809.23 and 8,633.43

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Solution

The fourth proportional to 15,803.73, 21,809.23 and 8,633.43 is: 11,914.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,803.73 : 21,809.23 = 8,633.43 : x
  2. Step 2: Convert to fraction form
    15,803.73/21,809.23 = 8,633.43/x
  3. Step 3: Cross multiply
    15,803.73x = 21,809.23 × 8,633.43
  4. Step 4: Simplify right side
    15,803.73x = 188,288,438.98
  5. Step 5: Solve for x
    x = 188,288,438.98/15,803.73
  6. Step 6: Final answer
    x = 11,914.18

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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.