Home / 20,946.24-31,400.64-7,789.44

Finding the Fourth Proportional to 20,946.24, 31,400.64 and 7,789.44

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Solution

The fourth proportional to 20,946.24, 31,400.64 and 7,789.44 is: 11,677.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,946.24 : 31,400.64 = 7,789.44 : x
  2. Step 2: Convert to fraction form
    20,946.24/31,400.64 = 7,789.44/x
  3. Step 3: Cross multiply
    20,946.24x = 31,400.64 × 7,789.44
  4. Step 4: Simplify right side
    20,946.24x = 244,593,401.24
  5. Step 5: Solve for x
    x = 244,593,401.24/20,946.24
  6. Step 6: Final answer
    x = 11,677.20

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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.