Home / 20,621.48-30,930.46-6,580.94

Finding the Fourth Proportional to 20,621.48, 30,930.46 and 6,580.94

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Solution

The fourth proportional to 20,621.48, 30,930.46 and 6,580.94 is: 9,870.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,621.48 : 30,930.46 = 6,580.94 : x
  2. Step 2: Convert to fraction form
    20,621.48/30,930.46 = 6,580.94/x
  3. Step 3: Cross multiply
    20,621.48x = 30,930.46 × 6,580.94
  4. Step 4: Simplify right side
    20,621.48x = 203,551,501.43
  5. Step 5: Solve for x
    x = 203,551,501.43/20,621.48
  6. Step 6: Final answer
    x = 9,870.85

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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.