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Finding the Fourth Proportional to 15,916.94, 21,965.21 and 8,843.21

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Solution

The fourth proportional to 15,916.94, 21,965.21 and 8,843.21 is: 12,203.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,916.94 : 21,965.21 = 8,843.21 : x
  2. Step 2: Convert to fraction form
    15,916.94/21,965.21 = 8,843.21/x
  3. Step 3: Cross multiply
    15,916.94x = 21,965.21 × 8,843.21
  4. Step 4: Simplify right side
    15,916.94x = 194,242,854.90
  5. Step 5: Solve for x
    x = 194,242,854.90/15,916.94
  6. Step 6: Final answer
    x = 12,203.53

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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.