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Finding the Fourth Proportional to 14,136.56, 21,212.40 and 8,304.56

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Solution

The fourth proportional to 14,136.56, 21,212.40 and 8,304.56 is: 12,461.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,136.56 : 21,212.40 = 8,304.56 : x
  2. Step 2: Convert to fraction form
    14,136.56/21,212.40 = 8,304.56/x
  3. Step 3: Cross multiply
    14,136.56x = 21,212.40 × 8,304.56
  4. Step 4: Simplify right side
    14,136.56x = 176,159,648.54
  5. Step 5: Solve for x
    x = 176,159,648.54/14,136.56
  6. Step 6: Final answer
    x = 12,461.28

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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.