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Finding the Fourth Proportional to 14,490.50, 21,721.04 and 8,237.58

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Solution

The fourth proportional to 14,490.50, 21,721.04 and 8,237.58 is: 12,348.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,490.50 : 21,721.04 = 8,237.58 : x
  2. Step 2: Convert to fraction form
    14,490.50/21,721.04 = 8,237.58/x
  3. Step 3: Cross multiply
    14,490.50x = 21,721.04 × 8,237.58
  4. Step 4: Simplify right side
    14,490.50x = 178,928,844.95
  5. Step 5: Solve for x
    x = 178,928,844.95/14,490.50
  6. Step 6: Final answer
    x = 12,348.01

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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.