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Finding the Fourth Proportional to 20,801.25, 31,201.88 and 6,950.25

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Solution

The fourth proportional to 20,801.25, 31,201.88 and 6,950.25 is: 10,425.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,801.25 : 31,201.88 = 6,950.25 : x
  2. Step 2: Convert to fraction form
    20,801.25/31,201.88 = 6,950.25/x
  3. Step 3: Cross multiply
    20,801.25x = 31,201.88 × 6,950.25
  4. Step 4: Simplify right side
    20,801.25x = 216,860,831.72
  5. Step 5: Solve for x
    x = 216,860,831.72/20,801.25
  6. Step 6: Final answer
    x = 10,425.38

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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.