Home / 20,930.03-31,394.63-6,138.62

Finding the Fourth Proportional to 20,930.03, 31,394.63 and 6,138.62

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Solution

The fourth proportional to 20,930.03, 31,394.63 and 6,138.62 is: 9,207.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,930.03 : 31,394.63 = 6,138.62 : x
  2. Step 2: Convert to fraction form
    20,930.03/31,394.63 = 6,138.62/x
  3. Step 3: Cross multiply
    20,930.03x = 31,394.63 × 6,138.62
  4. Step 4: Simplify right side
    20,930.03x = 192,719,515.94
  5. Step 5: Solve for x
    x = 192,719,515.94/20,930.03
  6. Step 6: Final answer
    x = 9,207.80

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1.5x scale

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.