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Finding the Fourth Proportional to 15,900.22, 21,941.13 and 8,826.04

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Solution

The fourth proportional to 15,900.22, 21,941.13 and 8,826.04 is: 12,179.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,900.22 : 21,941.13 = 8,826.04 : x
  2. Step 2: Convert to fraction form
    15,900.22/21,941.13 = 8,826.04/x
  3. Step 3: Cross multiply
    15,900.22x = 21,941.13 × 8,826.04
  4. Step 4: Simplify right side
    15,900.22x = 193,653,291.03
  5. Step 5: Solve for x
    x = 193,653,291.03/15,900.22
  6. Step 6: Final answer
    x = 12,179.28

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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.