Home / 20,531.05-30,797.68-6,490.01

Finding the Fourth Proportional to 20,531.05, 30,797.68 and 6,490.01

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Solution

The fourth proportional to 20,531.05, 30,797.68 and 6,490.01 is: 9,735.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,531.05 : 30,797.68 = 6,490.01 : x
  2. Step 2: Convert to fraction form
    20,531.05/30,797.68 = 6,490.01/x
  3. Step 3: Cross multiply
    20,531.05x = 30,797.68 × 6,490.01
  4. Step 4: Simplify right side
    20,531.05x = 199,877,251.18
  5. Step 5: Solve for x
    x = 199,877,251.18/20,531.05
  6. Step 6: Final answer
    x = 9,735.36

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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.