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Finding the Fourth Proportional to 22,215.87, 30,654.90 and 14,268.87

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Solution

The fourth proportional to 22,215.87, 30,654.90 and 14,268.87 is: 19,689.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,215.87 : 30,654.90 = 14,268.87 : x
  2. Step 2: Convert to fraction form
    22,215.87/30,654.90 = 14,268.87/x
  3. Step 3: Cross multiply
    22,215.87x = 30,654.90 × 14,268.87
  4. Step 4: Simplify right side
    22,215.87x = 437,410,782.96
  5. Step 5: Solve for x
    x = 437,410,782.96/22,215.87
  6. Step 6: Final answer
    x = 19,689.11

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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.