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Finding the Fourth Proportional to 21,989.32, 32,983.98 and 5,349.36

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Solution

The fourth proportional to 21,989.32, 32,983.98 and 5,349.36 is: 8,024.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,989.32 : 32,983.98 = 5,349.36 : x
  2. Step 2: Convert to fraction form
    21,989.32/32,983.98 = 5,349.36/x
  3. Step 3: Cross multiply
    21,989.32x = 32,983.98 × 5,349.36
  4. Step 4: Simplify right side
    21,989.32x = 176,443,101.35
  5. Step 5: Solve for x
    x = 176,443,101.35/21,989.32
  6. Step 6: Final answer
    x = 8,024.04

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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.