Home / 12,378.03-18,573.43-8,220.92

Finding the Fourth Proportional to 12,378.03, 18,573.43 and 8,220.92

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Solution

The fourth proportional to 12,378.03, 18,573.43 and 8,220.92 is: 12,335.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,378.03 : 18,573.43 = 8,220.92 : x
  2. Step 2: Convert to fraction form
    12,378.03/18,573.43 = 8,220.92/x
  3. Step 3: Cross multiply
    12,378.03x = 18,573.43 × 8,220.92
  4. Step 4: Simplify right side
    12,378.03x = 152,690,568.74
  5. Step 5: Solve for x
    x = 152,690,568.74/12,378.03
  6. Step 6: Final answer
    x = 12,335.61

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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.