Home / 8,722.20-13,020.02-8,071.72

Finding the Fourth Proportional to 8,722.20, 13,020.02 and 8,071.72

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Solution

The fourth proportional to 8,722.20, 13,020.02 and 8,071.72 is: 12,049.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,722.20 : 13,020.02 = 8,071.72 : x
  2. Step 2: Convert to fraction form
    8,722.20/13,020.02 = 8,071.72/x
  3. Step 3: Cross multiply
    8,722.20x = 13,020.02 × 8,071.72
  4. Step 4: Simplify right side
    8,722.20x = 105,093,958.60
  5. Step 5: Solve for x
    x = 105,093,958.60/8,722.20
  6. Step 6: Final answer
    x = 12,049.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.