Home / 20,388.80-30,579.84-6,536

Finding the Fourth Proportional to 20,388.80, 30,579.84 and 6,536

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Solution

The fourth proportional to 20,388.80, 30,579.84 and 6,536 is: 9,802.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,388.80 : 30,579.84 = 6,536 : x
  2. Step 2: Convert to fraction form
    20,388.80/30,579.84 = 6,536/x
  3. Step 3: Cross multiply
    20,388.80x = 30,579.84 × 6,536
  4. Step 4: Simplify right side
    20,388.80x = 199,869,834.24
  5. Step 5: Solve for x
    x = 199,869,834.24/20,388.80
  6. Step 6: Final answer
    x = 9,802.92

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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.