Home / 12,376.70-17,078.27-7,071.86

Finding the Fourth Proportional to 12,376.70, 17,078.27 and 7,071.86

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Solution

The fourth proportional to 12,376.70, 17,078.27 and 7,071.86 is: 9,758.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,376.70 : 17,078.27 = 7,071.86 : x
  2. Step 2: Convert to fraction form
    12,376.70/17,078.27 = 7,071.86/x
  3. Step 3: Cross multiply
    12,376.70x = 17,078.27 × 7,071.86
  4. Step 4: Simplify right side
    12,376.70x = 120,775,152.16
  5. Step 5: Solve for x
    x = 120,775,152.16/12,376.70
  6. Step 6: Final answer
    x = 9,758.27

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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.