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Finding the Fourth Proportional to 14,821.25, 20,450.81 and 9,156.92

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Solution

The fourth proportional to 14,821.25, 20,450.81 and 9,156.92 is: 12,634.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,821.25 : 20,450.81 = 9,156.92 : x
  2. Step 2: Convert to fraction form
    14,821.25/20,450.81 = 9,156.92/x
  3. Step 3: Cross multiply
    14,821.25x = 20,450.81 × 9,156.92
  4. Step 4: Simplify right side
    14,821.25x = 187,266,351.74
  5. Step 5: Solve for x
    x = 187,266,351.74/14,821.25
  6. Step 6: Final answer
    x = 12,634.99

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1.5x scale

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.