Home / 20,511.74-30,767.60-4,929.36

Finding the Fourth Proportional to 20,511.74, 30,767.60 and 4,929.36

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Solution

The fourth proportional to 20,511.74, 30,767.60 and 4,929.36 is: 7,394.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,511.74 : 30,767.60 = 4,929.36 : x
  2. Step 2: Convert to fraction form
    20,511.74/30,767.60 = 4,929.36/x
  3. Step 3: Cross multiply
    20,511.74x = 30,767.60 × 4,929.36
  4. Step 4: Simplify right side
    20,511.74x = 151,664,576.74
  5. Step 5: Solve for x
    x = 151,664,576.74/20,511.74
  6. Step 6: Final answer
    x = 7,394.04

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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.