Home / 8,919.81-13,382.46-7,071.80

Finding the Fourth Proportional to 8,919.81, 13,382.46 and 7,071.80

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Solution

The fourth proportional to 8,919.81, 13,382.46 and 7,071.80 is: 10,609.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,919.81 : 13,382.46 = 7,071.80 : x
  2. Step 2: Convert to fraction form
    8,919.81/13,382.46 = 7,071.80/x
  3. Step 3: Cross multiply
    8,919.81x = 13,382.46 × 7,071.80
  4. Step 4: Simplify right side
    8,919.81x = 94,638,013.72
  5. Step 5: Solve for x
    x = 94,638,013.72/8,919.81
  6. Step 6: Final answer
    x = 10,609.87

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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.