Home / 19,913.76-29,874.24-8,220.60

Finding the Fourth Proportional to 19,913.76, 29,874.24 and 8,220.60

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Solution

The fourth proportional to 19,913.76, 29,874.24 and 8,220.60 is: 12,332.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,913.76 : 29,874.24 = 8,220.60 : x
  2. Step 2: Convert to fraction form
    19,913.76/29,874.24 = 8,220.60/x
  3. Step 3: Cross multiply
    19,913.76x = 29,874.24 × 8,220.60
  4. Step 4: Simplify right side
    19,913.76x = 245,584,177.34
  5. Step 5: Solve for x
    x = 245,584,177.34/19,913.76
  6. Step 6: Final answer
    x = 12,332.39

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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.