Home / 20,756.84-31,135.23-7,610.27

Finding the Fourth Proportional to 20,756.84, 31,135.23 and 7,610.27

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Solution

The fourth proportional to 20,756.84, 31,135.23 and 7,610.27 is: 11,415.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,756.84 : 31,135.23 = 7,610.27 : x
  2. Step 2: Convert to fraction form
    20,756.84/31,135.23 = 7,610.27/x
  3. Step 3: Cross multiply
    20,756.84x = 31,135.23 × 7,610.27
  4. Step 4: Simplify right side
    20,756.84x = 236,947,351.14
  5. Step 5: Solve for x
    x = 236,947,351.14/20,756.84
  6. Step 6: Final answer
    x = 11,415.39

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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.