Home / 20,794.10-31,203.50-7,655.70

Finding the Fourth Proportional to 20,794.10, 31,203.50 and 7,655.70

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Solution

The fourth proportional to 20,794.10, 31,203.50 and 7,655.70 is: 11,488.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,794.10 : 31,203.50 = 7,655.70 : x
  2. Step 2: Convert to fraction form
    20,794.10/31,203.50 = 7,655.70/x
  3. Step 3: Cross multiply
    20,794.10x = 31,203.50 × 7,655.70
  4. Step 4: Simplify right side
    20,794.10x = 238,884,634.95
  5. Step 5: Solve for x
    x = 238,884,634.95/20,794.10
  6. Step 6: Final answer
    x = 11,488.10

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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.