Home / 20,320.37-30,481.57-6,470.45

Finding the Fourth Proportional to 20,320.37, 30,481.57 and 6,470.45

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Solution

The fourth proportional to 20,320.37, 30,481.57 and 6,470.45 is: 9,705.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,320.37 : 30,481.57 = 6,470.45 : x
  2. Step 2: Convert to fraction form
    20,320.37/30,481.57 = 6,470.45/x
  3. Step 3: Cross multiply
    20,320.37x = 30,481.57 × 6,470.45
  4. Step 4: Simplify right side
    20,320.37x = 197,229,322.20
  5. Step 5: Solve for x
    x = 197,229,322.20/20,320.37
  6. Step 6: Final answer
    x = 9,705.99

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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.