Home / 11,857.90-17,778.21-6,306.70

Finding the Fourth Proportional to 11,857.90, 17,778.21 and 6,306.70

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Solution

The fourth proportional to 11,857.90, 17,778.21 and 6,306.70 is: 9,455.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,857.90 : 17,778.21 = 6,306.70 : x
  2. Step 2: Convert to fraction form
    11,857.90/17,778.21 = 6,306.70/x
  3. Step 3: Cross multiply
    11,857.90x = 17,778.21 × 6,306.70
  4. Step 4: Simplify right side
    11,857.90x = 112,121,837.01
  5. Step 5: Solve for x
    x = 112,121,837.01/11,857.90
  6. Step 6: Final answer
    x = 9,455.45

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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.