Home / 19,305.81-28,951.43-8,217.72

Finding the Fourth Proportional to 19,305.81, 28,951.43 and 8,217.72

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Solution

The fourth proportional to 19,305.81, 28,951.43 and 8,217.72 is: 12,323.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,305.81 : 28,951.43 = 8,217.72 : x
  2. Step 2: Convert to fraction form
    19,305.81/28,951.43 = 8,217.72/x
  3. Step 3: Cross multiply
    19,305.81x = 28,951.43 × 8,217.72
  4. Step 4: Simplify right side
    19,305.81x = 237,914,704.25
  5. Step 5: Solve for x
    x = 237,914,704.25/19,305.81
  6. Step 6: Final answer
    x = 12,323.48

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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.