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Finding the Fourth Proportional to 20,292.30, 30,440.88 and 8,604

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Solution

The fourth proportional to 20,292.30, 30,440.88 and 8,604 is: 12,907.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,292.30 : 30,440.88 = 8,604 : x
  2. Step 2: Convert to fraction form
    20,292.30/30,440.88 = 8,604/x
  3. Step 3: Cross multiply
    20,292.30x = 30,440.88 × 8,604
  4. Step 4: Simplify right side
    20,292.30x = 261,913,331.52
  5. Step 5: Solve for x
    x = 261,913,331.52/20,292.30
  6. Step 6: Final answer
    x = 12,907.03

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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.