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Finding the Fourth Proportional to 19,002, 28,486.68 and 7,307.28

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Solution

The fourth proportional to 19,002, 28,486.68 and 7,307.28 is: 10,954.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,002 : 28,486.68 = 7,307.28 : x
  2. Step 2: Convert to fraction form
    19,002/28,486.68 = 7,307.28/x
  3. Step 3: Cross multiply
    19,002x = 28,486.68 × 7,307.28
  4. Step 4: Simplify right side
    19,002x = 208,160,147.03
  5. Step 5: Solve for x
    x = 208,160,147.03/19,002
  6. Step 6: Final answer
    x = 10,954.64

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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.