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Finding the Fourth Proportional to 19,265.25, 28,897.88 and 5,414.25

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Solution

The fourth proportional to 19,265.25, 28,897.88 and 5,414.25 is: 8,121.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,265.25 : 28,897.88 = 5,414.25 : x
  2. Step 2: Convert to fraction form
    19,265.25/28,897.88 = 5,414.25/x
  3. Step 3: Cross multiply
    19,265.25x = 28,897.88 × 5,414.25
  4. Step 4: Simplify right side
    19,265.25x = 156,460,319.72
  5. Step 5: Solve for x
    x = 156,460,319.72/19,265.25
  6. Step 6: Final answer
    x = 8,121.38

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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.