Home / 20,229.78-30,345.94-6,190.26

Finding the Fourth Proportional to 20,229.78, 30,345.94 and 6,190.26

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Solution

The fourth proportional to 20,229.78, 30,345.94 and 6,190.26 is: 9,285.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,229.78 : 30,345.94 = 6,190.26 : x
  2. Step 2: Convert to fraction form
    20,229.78/30,345.94 = 6,190.26/x
  3. Step 3: Cross multiply
    20,229.78x = 30,345.94 × 6,190.26
  4. Step 4: Simplify right side
    20,229.78x = 187,849,152.48
  5. Step 5: Solve for x
    x = 187,849,152.48/20,229.78
  6. Step 6: Final answer
    x = 9,285.77

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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.