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Finding the Fourth Proportional to 15,797.97, 21,800.61 and 8,724.24

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Solution

The fourth proportional to 15,797.97, 21,800.61 and 8,724.24 is: 12,039.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,797.97 : 21,800.61 = 8,724.24 : x
  2. Step 2: Convert to fraction form
    15,797.97/21,800.61 = 8,724.24/x
  3. Step 3: Cross multiply
    15,797.97x = 21,800.61 × 8,724.24
  4. Step 4: Simplify right side
    15,797.97x = 190,193,753.79
  5. Step 5: Solve for x
    x = 190,193,753.79/15,797.97
  6. Step 6: Final answer
    x = 12,039.13

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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.