Home / 20,285.50-30,431.10-6,246.70

Finding the Fourth Proportional to 20,285.50, 30,431.10 and 6,246.70

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Solution

The fourth proportional to 20,285.50, 30,431.10 and 6,246.70 is: 9,370.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,285.50 : 30,431.10 = 6,246.70 : x
  2. Step 2: Convert to fraction form
    20,285.50/30,431.10 = 6,246.70/x
  3. Step 3: Cross multiply
    20,285.50x = 30,431.10 × 6,246.70
  4. Step 4: Simplify right side
    20,285.50x = 190,093,952.37
  5. Step 5: Solve for x
    x = 190,093,952.37/20,285.50
  6. Step 6: Final answer
    x = 9,370.93

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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.