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Finding the Fourth Proportional to 22,246.88, 30,700.69 and 12,815.44

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Solution

The fourth proportional to 22,246.88, 30,700.69 and 12,815.44 is: 17,685.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,246.88 : 30,700.69 = 12,815.44 : x
  2. Step 2: Convert to fraction form
    22,246.88/30,700.69 = 12,815.44/x
  3. Step 3: Cross multiply
    22,246.88x = 30,700.69 × 12,815.44
  4. Step 4: Simplify right side
    22,246.88x = 393,442,741.86
  5. Step 5: Solve for x
    x = 393,442,741.86/22,246.88
  6. Step 6: Final answer
    x = 17,685.30

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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.