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Finding the Fourth Proportional to 19,293.92, 28,919.76 and 9,934.50

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Solution

The fourth proportional to 19,293.92, 28,919.76 and 9,934.50 is: 14,890.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,293.92 : 28,919.76 = 9,934.50 : x
  2. Step 2: Convert to fraction form
    19,293.92/28,919.76 = 9,934.50/x
  3. Step 3: Cross multiply
    19,293.92x = 28,919.76 × 9,934.50
  4. Step 4: Simplify right side
    19,293.92x = 287,303,265.90
  5. Step 5: Solve for x
    x = 287,303,265.90/19,293.92
  6. Step 6: Final answer
    x = 14,890.87

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1.5x scale

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.