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Finding the Fourth Proportional to 19,020.36, 28,532 and 5,169

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Solution

The fourth proportional to 19,020.36, 28,532 and 5,169 is: 7,753.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,020.36 : 28,532 = 5,169 : x
  2. Step 2: Convert to fraction form
    19,020.36/28,532 = 5,169/x
  3. Step 3: Cross multiply
    19,020.36x = 28,532 × 5,169
  4. Step 4: Simplify right side
    19,020.36x = 147,481,908
  5. Step 5: Solve for x
    x = 147,481,908/19,020.36
  6. Step 6: Final answer
    x = 7,753.90

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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.