Home / 34,380.85-51,630.73-20,428.55

Finding the Fourth Proportional to 34,380.85, 51,630.73 and 20,428.55

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Solution

The fourth proportional to 34,380.85, 51,630.73 and 20,428.55 is: 30,678.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,380.85 : 51,630.73 = 20,428.55 : x
  2. Step 2: Convert to fraction form
    34,380.85/51,630.73 = 20,428.55/x
  3. Step 3: Cross multiply
    34,380.85x = 51,630.73 × 20,428.55
  4. Step 4: Simplify right side
    34,380.85x = 1,054,740,640.12
  5. Step 5: Solve for x
    x = 1,054,740,640.12/34,380.85
  6. Step 6: Final answer
    x = 30,678.15

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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.