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Finding the Fourth Proportional to 15,669.21, 21,623.99 and 8,596.11

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Solution

The fourth proportional to 15,669.21, 21,623.99 and 8,596.11 is: 11,862.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,669.21 : 21,623.99 = 8,596.11 : x
  2. Step 2: Convert to fraction form
    15,669.21/21,623.99 = 8,596.11/x
  3. Step 3: Cross multiply
    15,669.21x = 21,623.99 × 8,596.11
  4. Step 4: Simplify right side
    15,669.21x = 185,882,196.68
  5. Step 5: Solve for x
    x = 185,882,196.68/15,669.21
  6. Step 6: Final answer
    x = 11,862.90

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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.