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Finding the Fourth Proportional to 20,794.90, 31,151.02 and 19,093.90

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Solution

The fourth proportional to 20,794.90, 31,151.02 and 19,093.90 is: 28,602.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,794.90 : 31,151.02 = 19,093.90 : x
  2. Step 2: Convert to fraction form
    20,794.90/31,151.02 = 19,093.90/x
  3. Step 3: Cross multiply
    20,794.90x = 31,151.02 × 19,093.90
  4. Step 4: Simplify right side
    20,794.90x = 594,794,460.78
  5. Step 5: Solve for x
    x = 594,794,460.78/20,794.90
  6. Step 6: Final answer
    x = 28,602.90

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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.