Home / 21,183.92-31,778.52-6,392.81

Finding the Fourth Proportional to 21,183.92, 31,778.52 and 6,392.81

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Solution

The fourth proportional to 21,183.92, 31,778.52 and 6,392.81 is: 9,590.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,183.92 : 31,778.52 = 6,392.81 : x
  2. Step 2: Convert to fraction form
    21,183.92/31,778.52 = 6,392.81/x
  3. Step 3: Cross multiply
    21,183.92x = 31,778.52 × 6,392.81
  4. Step 4: Simplify right side
    21,183.92x = 203,153,881.55
  5. Step 5: Solve for x
    x = 203,153,881.55/21,183.92
  6. Step 6: Final answer
    x = 9,590.01

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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.