Home / 20,747.16-31,113.90-8,263.44

Finding the Fourth Proportional to 20,747.16, 31,113.90 and 8,263.44

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Solution

The fourth proportional to 20,747.16, 31,113.90 and 8,263.44 is: 12,392.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,747.16 : 31,113.90 = 8,263.44 : x
  2. Step 2: Convert to fraction form
    20,747.16/31,113.90 = 8,263.44/x
  3. Step 3: Cross multiply
    20,747.16x = 31,113.90 × 8,263.44
  4. Step 4: Simplify right side
    20,747.16x = 257,107,845.82
  5. Step 5: Solve for x
    x = 257,107,845.82/20,747.16
  6. Step 6: Final answer
    x = 12,392.44

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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.