Home / 19,022.90-28,540.41-7,930.76

Finding the Fourth Proportional to 19,022.90, 28,540.41 and 7,930.76

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Solution

The fourth proportional to 19,022.90, 28,540.41 and 7,930.76 is: 11,898.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,022.90 : 28,540.41 = 7,930.76 : x
  2. Step 2: Convert to fraction form
    19,022.90/28,540.41 = 7,930.76/x
  3. Step 3: Cross multiply
    19,022.90x = 28,540.41 × 7,930.76
  4. Step 4: Simplify right side
    19,022.90x = 226,346,999.31
  5. Step 5: Solve for x
    x = 226,346,999.31/19,022.90
  6. Step 6: Final answer
    x = 11,898.66

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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.