Home / 20,802.55-31,200.76-6,763.85

Finding the Fourth Proportional to 20,802.55, 31,200.76 and 6,763.85

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Solution

The fourth proportional to 20,802.55, 31,200.76 and 6,763.85 is: 10,144.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,802.55 : 31,200.76 = 6,763.85 : x
  2. Step 2: Convert to fraction form
    20,802.55/31,200.76 = 6,763.85/x
  3. Step 3: Cross multiply
    20,802.55x = 31,200.76 × 6,763.85
  4. Step 4: Simplify right side
    20,802.55x = 211,037,260.53
  5. Step 5: Solve for x
    x = 211,037,260.53/20,802.55
  6. Step 6: Final answer
    x = 10,144.78

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1.5x scale

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.