Home / 20,309.56-30,443.57-7,824.70

Finding the Fourth Proportional to 20,309.56, 30,443.57 and 7,824.70

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Solution

The fourth proportional to 20,309.56, 30,443.57 and 7,824.70 is: 11,729.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,309.56 : 30,443.57 = 7,824.70 : x
  2. Step 2: Convert to fraction form
    20,309.56/30,443.57 = 7,824.70/x
  3. Step 3: Cross multiply
    20,309.56x = 30,443.57 × 7,824.70
  4. Step 4: Simplify right side
    20,309.56x = 238,211,649.96
  5. Step 5: Solve for x
    x = 238,211,649.96/20,309.56
  6. Step 6: Final answer
    x = 11,729.04

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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.