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Finding the Fourth Proportional to 21,803.84, 32,708.96 and 7,007.88

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Solution

The fourth proportional to 21,803.84, 32,708.96 and 7,007.88 is: 10,512.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,803.84 : 32,708.96 = 7,007.88 : x
  2. Step 2: Convert to fraction form
    21,803.84/32,708.96 = 7,007.88/x
  3. Step 3: Cross multiply
    21,803.84x = 32,708.96 × 7,007.88
  4. Step 4: Simplify right side
    21,803.84x = 229,220,466.60
  5. Step 5: Solve for x
    x = 229,220,466.60/21,803.84
  6. Step 6: Final answer
    x = 10,512.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.