Home / 21,990.54-32,985.36-5,350.66

Finding the Fourth Proportional to 21,990.54, 32,985.36 and 5,350.66

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Solution

The fourth proportional to 21,990.54, 32,985.36 and 5,350.66 is: 8,025.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,990.54 : 32,985.36 = 5,350.66 : x
  2. Step 2: Convert to fraction form
    21,990.54/32,985.36 = 5,350.66/x
  3. Step 3: Cross multiply
    21,990.54x = 32,985.36 × 5,350.66
  4. Step 4: Simplify right side
    21,990.54x = 176,493,446.34
  5. Step 5: Solve for x
    x = 176,493,446.34/21,990.54
  6. Step 6: Final answer
    x = 8,025.88

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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.