Home / 20,531.61-30,811.05-7,383.96

Finding the Fourth Proportional to 20,531.61, 30,811.05 and 7,383.96

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Solution

The fourth proportional to 20,531.61, 30,811.05 and 7,383.96 is: 11,080.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,531.61 : 30,811.05 = 7,383.96 : x
  2. Step 2: Convert to fraction form
    20,531.61/30,811.05 = 7,383.96/x
  3. Step 3: Cross multiply
    20,531.61x = 30,811.05 × 7,383.96
  4. Step 4: Simplify right side
    20,531.61x = 227,507,560.76
  5. Step 5: Solve for x
    x = 227,507,560.76/20,531.61
  6. Step 6: Final answer
    x = 11,080.84

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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.