Home / 18,515.20-27,772.80-8,673.70

Finding the Fourth Proportional to 18,515.20, 27,772.80 and 8,673.70

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Solution

The fourth proportional to 18,515.20, 27,772.80 and 8,673.70 is: 13,010.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,515.20 : 27,772.80 = 8,673.70 : x
  2. Step 2: Convert to fraction form
    18,515.20/27,772.80 = 8,673.70/x
  3. Step 3: Cross multiply
    18,515.20x = 27,772.80 × 8,673.70
  4. Step 4: Simplify right side
    18,515.20x = 240,892,935.36
  5. Step 5: Solve for x
    x = 240,892,935.36/18,515.20
  6. Step 6: Final answer
    x = 13,010.55

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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.