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Finding the Fourth Proportional to 19,156.50, 28,747.71 and 6,844.50

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Solution

The fourth proportional to 19,156.50, 28,747.71 and 6,844.50 is: 10,271.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,156.50 : 28,747.71 = 6,844.50 : x
  2. Step 2: Convert to fraction form
    19,156.50/28,747.71 = 6,844.50/x
  3. Step 3: Cross multiply
    19,156.50x = 28,747.71 × 6,844.50
  4. Step 4: Simplify right side
    19,156.50x = 196,763,701.10
  5. Step 5: Solve for x
    x = 196,763,701.10/19,156.50
  6. Step 6: Final answer
    x = 10,271.38

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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.