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Finding the Fourth Proportional to 15,569.82, 21,486.47 and 8,496.90

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Solution

The fourth proportional to 15,569.82, 21,486.47 and 8,496.90 is: 11,725.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,569.82 : 21,486.47 = 8,496.90 : x
  2. Step 2: Convert to fraction form
    15,569.82/21,486.47 = 8,496.90/x
  3. Step 3: Cross multiply
    15,569.82x = 21,486.47 × 8,496.90
  4. Step 4: Simplify right side
    15,569.82x = 182,568,344.46
  5. Step 5: Solve for x
    x = 182,568,344.46/15,569.82
  6. Step 6: Final answer
    x = 11,725.78

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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.