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Finding the Fourth Proportional to 21,990.43, 32,977.41 and 8,838.37

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Solution

The fourth proportional to 21,990.43, 32,977.41 and 8,838.37 is: 13,254.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,990.43 : 32,977.41 = 8,838.37 : x
  2. Step 2: Convert to fraction form
    21,990.43/32,977.41 = 8,838.37/x
  3. Step 3: Cross multiply
    21,990.43x = 32,977.41 × 8,838.37
  4. Step 4: Simplify right side
    21,990.43x = 291,466,551.22
  5. Step 5: Solve for x
    x = 291,466,551.22/21,990.43
  6. Step 6: Final answer
    x = 13,254.25

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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.