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Finding the Fourth Proportional to 8,493.33, 12,742.74 and 7,121.01

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Solution

The fourth proportional to 8,493.33, 12,742.74 and 7,121.01 is: 10,683.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,493.33 : 12,742.74 = 7,121.01 : x
  2. Step 2: Convert to fraction form
    8,493.33/12,742.74 = 7,121.01/x
  3. Step 3: Cross multiply
    8,493.33x = 12,742.74 × 7,121.01
  4. Step 4: Simplify right side
    8,493.33x = 90,741,178.97
  5. Step 5: Solve for x
    x = 90,741,178.97/8,493.33
  6. Step 6: Final answer
    x = 10,683.82

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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.