Home / 8,891.23-12,255.72-6,999.81

Finding the Fourth Proportional to 8,891.23, 12,255.72 and 6,999.81

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Solution

The fourth proportional to 8,891.23, 12,255.72 and 6,999.81 is: 9,648.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,891.23 : 12,255.72 = 6,999.81 : x
  2. Step 2: Convert to fraction form
    8,891.23/12,255.72 = 6,999.81/x
  3. Step 3: Cross multiply
    8,891.23x = 12,255.72 × 6,999.81
  4. Step 4: Simplify right side
    8,891.23x = 85,787,685.16
  5. Step 5: Solve for x
    x = 85,787,685.16/8,891.23
  6. Step 6: Final answer
    x = 9,648.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.