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Finding the Fourth Proportional to 15,797.36, 21,800.58 and 8,723.90

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Solution

The fourth proportional to 15,797.36, 21,800.58 and 8,723.90 is: 12,039.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,797.36 : 21,800.58 = 8,723.90 : x
  2. Step 2: Convert to fraction form
    15,797.36/21,800.58 = 8,723.90/x
  3. Step 3: Cross multiply
    15,797.36x = 21,800.58 × 8,723.90
  4. Step 4: Simplify right side
    15,797.36x = 190,186,079.86
  5. Step 5: Solve for x
    x = 190,186,079.86/15,797.36
  6. Step 6: Final answer
    x = 12,039.11

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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.