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Finding the Fourth Proportional to 15,803.97, 21,806.94 and 9,089.88

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Solution

The fourth proportional to 15,803.97, 21,806.94 and 9,089.88 is: 12,542.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,803.97 : 21,806.94 = 9,089.88 : x
  2. Step 2: Convert to fraction form
    15,803.97/21,806.94 = 9,089.88/x
  3. Step 3: Cross multiply
    15,803.97x = 21,806.94 × 9,089.88
  4. Step 4: Simplify right side
    15,803.97x = 198,222,467.77
  5. Step 5: Solve for x
    x = 198,222,467.77/15,803.97
  6. Step 6: Final answer
    x = 12,542.57

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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.