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Finding the Fourth Proportional to 13,290.44, 19,916.87 and 7,369.94

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Solution

The fourth proportional to 13,290.44, 19,916.87 and 7,369.94 is: 11,044.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,290.44 : 19,916.87 = 7,369.94 : x
  2. Step 2: Convert to fraction form
    13,290.44/19,916.87 = 7,369.94/x
  3. Step 3: Cross multiply
    13,290.44x = 19,916.87 × 7,369.94
  4. Step 4: Simplify right side
    13,290.44x = 146,786,136.89
  5. Step 5: Solve for x
    x = 146,786,136.89/13,290.44
  6. Step 6: Final answer
    x = 11,044.49

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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.