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Finding the Fourth Proportional to 19,275.94, 28,913.92 and 5,424.94

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Solution

The fourth proportional to 19,275.94, 28,913.92 and 5,424.94 is: 8,137.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,275.94 : 28,913.92 = 5,424.94 : x
  2. Step 2: Convert to fraction form
    19,275.94/28,913.92 = 5,424.94/x
  3. Step 3: Cross multiply
    19,275.94x = 28,913.92 × 5,424.94
  4. Step 4: Simplify right side
    19,275.94x = 156,856,281.16
  5. Step 5: Solve for x
    x = 156,856,281.16/19,275.94
  6. Step 6: Final answer
    x = 8,137.41

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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.