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Finding the Fourth Proportional to 21,803.66, 32,720.02 and 7,952.66

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Solution

The fourth proportional to 21,803.66, 32,720.02 and 7,952.66 is: 11,934.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,803.66 : 32,720.02 = 7,952.66 : x
  2. Step 2: Convert to fraction form
    21,803.66/32,720.02 = 7,952.66/x
  3. Step 3: Cross multiply
    21,803.66x = 32,720.02 × 7,952.66
  4. Step 4: Simplify right side
    21,803.66x = 260,211,194.25
  5. Step 5: Solve for x
    x = 260,211,194.25/21,803.66
  6. Step 6: Final answer
    x = 11,934.29

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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.