Home / 20,764.42-31,155.75-10,901.39

Finding the Fourth Proportional to 20,764.42, 31,155.75 and 10,901.39

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Solution

The fourth proportional to 20,764.42, 31,155.75 and 10,901.39 is: 16,356.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,764.42 : 31,155.75 = 10,901.39 : x
  2. Step 2: Convert to fraction form
    20,764.42/31,155.75 = 10,901.39/x
  3. Step 3: Cross multiply
    20,764.42x = 31,155.75 × 10,901.39
  4. Step 4: Simplify right side
    20,764.42x = 339,640,825.71
  5. Step 5: Solve for x
    x = 339,640,825.71/20,764.42
  6. Step 6: Final answer
    x = 16,356.87

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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.