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Finding the Fourth Proportional to 20,292.78, 30,440.90 and 5,301.89

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Solution

The fourth proportional to 20,292.78, 30,440.90 and 5,301.89 is: 7,953.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,292.78 : 30,440.90 = 5,301.89 : x
  2. Step 2: Convert to fraction form
    20,292.78/30,440.90 = 5,301.89/x
  3. Step 3: Cross multiply
    20,292.78x = 30,440.90 × 5,301.89
  4. Step 4: Simplify right side
    20,292.78x = 161,394,303.30
  5. Step 5: Solve for x
    x = 161,394,303.30/20,292.78
  6. Step 6: Final answer
    x = 7,953.29

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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.