Home / 20,867.00-31,278.62-7,710.98

Finding the Fourth Proportional to 20,867.00, 31,278.62 and 7,710.98

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Solution

The fourth proportional to 20,867.00, 31,278.62 and 7,710.98 is: 11,558.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,867.00 : 31,278.62 = 7,710.98 : x
  2. Step 2: Convert to fraction form
    20,867.00/31,278.62 = 7,710.98/x
  3. Step 3: Cross multiply
    20,867.00x = 31,278.62 × 7,710.98
  4. Step 4: Simplify right side
    20,867.00x = 241,188,676.13
  5. Step 5: Solve for x
    x = 241,188,676.13/20,867.00
  6. Step 6: Final answer
    x = 11,558.38

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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.