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Finding the Fourth Proportional to 12,728.52, 19,094.04 and 3,368.52

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Solution

The fourth proportional to 12,728.52, 19,094.04 and 3,368.52 is: 5,053.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,728.52 : 19,094.04 = 3,368.52 : x
  2. Step 2: Convert to fraction form
    12,728.52/19,094.04 = 3,368.52/x
  3. Step 3: Cross multiply
    12,728.52x = 19,094.04 × 3,368.52
  4. Step 4: Simplify right side
    12,728.52x = 64,318,655.62
  5. Step 5: Solve for x
    x = 64,318,655.62/12,728.52
  6. Step 6: Final answer
    x = 5,053.11

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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.