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Finding the Fourth Proportional to 19,321.44, 28,982.16 and 10,551.57

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Solution

The fourth proportional to 19,321.44, 28,982.16 and 10,551.57 is: 15,827.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,321.44 : 28,982.16 = 10,551.57 : x
  2. Step 2: Convert to fraction form
    19,321.44/28,982.16 = 10,551.57/x
  3. Step 3: Cross multiply
    19,321.44x = 28,982.16 × 10,551.57
  4. Step 4: Simplify right side
    19,321.44x = 305,807,289.99
  5. Step 5: Solve for x
    x = 305,807,289.99/19,321.44
  6. Step 6: Final answer
    x = 15,827.36

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Similar ratio
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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.