Home / 20,428.88-30,648.12-6,577.36

Finding the Fourth Proportional to 20,428.88, 30,648.12 and 6,577.36

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Solution

The fourth proportional to 20,428.88, 30,648.12 and 6,577.36 is: 9,867.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,428.88 : 30,648.12 = 6,577.36 : x
  2. Step 2: Convert to fraction form
    20,428.88/30,648.12 = 6,577.36/x
  3. Step 3: Cross multiply
    20,428.88x = 30,648.12 × 6,577.36
  4. Step 4: Simplify right side
    20,428.88x = 201,583,718.56
  5. Step 5: Solve for x
    x = 201,583,718.56/20,428.88
  6. Step 6: Final answer
    x = 9,867.59

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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.