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Finding the Fourth Proportional to 21,903.64, 32,855.46 and 5,263.68

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Solution

The fourth proportional to 21,903.64, 32,855.46 and 5,263.68 is: 7,895.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,903.64 : 32,855.46 = 5,263.68 : x
  2. Step 2: Convert to fraction form
    21,903.64/32,855.46 = 5,263.68/x
  3. Step 3: Cross multiply
    21,903.64x = 32,855.46 × 5,263.68
  4. Step 4: Simplify right side
    21,903.64x = 172,940,511.06
  5. Step 5: Solve for x
    x = 172,940,511.06/21,903.64
  6. Step 6: Final answer
    x = 7,895.51

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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.