Home / 20,581.02-30,868.31-6,539.20

Finding the Fourth Proportional to 20,581.02, 30,868.31 and 6,539.20

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Solution

The fourth proportional to 20,581.02, 30,868.31 and 6,539.20 is: 9,807.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,581.02 : 30,868.31 = 6,539.20 : x
  2. Step 2: Convert to fraction form
    20,581.02/30,868.31 = 6,539.20/x
  3. Step 3: Cross multiply
    20,581.02x = 30,868.31 × 6,539.20
  4. Step 4: Simplify right side
    20,581.02x = 201,854,052.75
  5. Step 5: Solve for x
    x = 201,854,052.75/20,581.02
  6. Step 6: Final answer
    x = 9,807.78

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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.