Home / 22,383.45-30,889.92-12,312.64

Finding the Fourth Proportional to 22,383.45, 30,889.92 and 12,312.64

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Solution

The fourth proportional to 22,383.45, 30,889.92 and 12,312.64 is: 16,991.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,383.45 : 30,889.92 = 12,312.64 : x
  2. Step 2: Convert to fraction form
    22,383.45/30,889.92 = 12,312.64/x
  3. Step 3: Cross multiply
    22,383.45x = 30,889.92 × 12,312.64
  4. Step 4: Simplify right side
    22,383.45x = 380,336,464.59
  5. Step 5: Solve for x
    x = 380,336,464.59/22,383.45
  6. Step 6: Final answer
    x = 16,991.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.