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Finding the Fourth Proportional to 15,899.94, 21,941.01 and 8,825.94

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Solution

The fourth proportional to 15,899.94, 21,941.01 and 8,825.94 is: 12,179.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,899.94 : 21,941.01 = 8,825.94 : x
  2. Step 2: Convert to fraction form
    15,899.94/21,941.01 = 8,825.94/x
  3. Step 3: Cross multiply
    15,899.94x = 21,941.01 × 8,825.94
  4. Step 4: Simplify right side
    15,899.94x = 193,650,037.80
  5. Step 5: Solve for x
    x = 193,650,037.80/15,899.94
  6. Step 6: Final answer
    x = 12,179.29

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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.