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Finding the Fourth Proportional to 19,136.70, 28,675.89 and 9,776.34

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Solution

The fourth proportional to 19,136.70, 28,675.89 and 9,776.34 is: 14,649.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,136.70 : 28,675.89 = 9,776.34 : x
  2. Step 2: Convert to fraction form
    19,136.70/28,675.89 = 9,776.34/x
  3. Step 3: Cross multiply
    19,136.70x = 28,675.89 × 9,776.34
  4. Step 4: Simplify right side
    19,136.70x = 280,345,250.44
  5. Step 5: Solve for x
    x = 280,345,250.44/19,136.70
  6. Step 6: Final answer
    x = 14,649.61

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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.