Home / 21,983.30-32,979.51-8,835.66

Finding the Fourth Proportional to 21,983.30, 32,979.51 and 8,835.66

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Solution

The fourth proportional to 21,983.30, 32,979.51 and 8,835.66 is: 13,255.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,983.30 : 32,979.51 = 8,835.66 : x
  2. Step 2: Convert to fraction form
    21,983.30/32,979.51 = 8,835.66/x
  3. Step 3: Cross multiply
    21,983.30x = 32,979.51 × 8,835.66
  4. Step 4: Simplify right side
    21,983.30x = 291,395,737.33
  5. Step 5: Solve for x
    x = 291,395,737.33/21,983.30
  6. Step 6: Final answer
    x = 13,255.32

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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.