Home / 20,762.90-31,139.68-5,968.52

Finding the Fourth Proportional to 20,762.90, 31,139.68 and 5,968.52

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Solution

The fourth proportional to 20,762.90, 31,139.68 and 5,968.52 is: 8,951.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,762.90 : 31,139.68 = 5,968.52 : x
  2. Step 2: Convert to fraction form
    20,762.90/31,139.68 = 5,968.52/x
  3. Step 3: Cross multiply
    20,762.90x = 31,139.68 × 5,968.52
  4. Step 4: Simplify right side
    20,762.90x = 185,857,802.87
  5. Step 5: Solve for x
    x = 185,857,802.87/20,762.90
  6. Step 6: Final answer
    x = 8,951.44

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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.