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Finding the Fourth Proportional to 14,907.98, 20,571.36 and 8,939.90

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Solution

The fourth proportional to 14,907.98, 20,571.36 and 8,939.90 is: 12,336.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,907.98 : 20,571.36 = 8,939.90 : x
  2. Step 2: Convert to fraction form
    14,907.98/20,571.36 = 8,939.90/x
  3. Step 3: Cross multiply
    14,907.98x = 20,571.36 × 8,939.90
  4. Step 4: Simplify right side
    14,907.98x = 183,905,901.26
  5. Step 5: Solve for x
    x = 183,905,901.26/14,907.98
  6. Step 6: Final answer
    x = 12,336.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.