Home / 11,251.20-16,886.40-5,020.80

Finding the Fourth Proportional to 11,251.20, 16,886.40 and 5,020.80

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Solution

The fourth proportional to 11,251.20, 16,886.40 and 5,020.80 is: 7,535.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,251.20 : 16,886.40 = 5,020.80 : x
  2. Step 2: Convert to fraction form
    11,251.20/16,886.40 = 5,020.80/x
  3. Step 3: Cross multiply
    11,251.20x = 16,886.40 × 5,020.80
  4. Step 4: Simplify right side
    11,251.20x = 84,783,237.12
  5. Step 5: Solve for x
    x = 84,783,237.12/11,251.20
  6. Step 6: Final answer
    x = 7,535.48

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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.