Home / 11,425.73-15,767.39-6,389.89

Finding the Fourth Proportional to 11,425.73, 15,767.39 and 6,389.89

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Solution

The fourth proportional to 11,425.73, 15,767.39 and 6,389.89 is: 8,817.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,425.73 : 15,767.39 = 6,389.89 : x
  2. Step 2: Convert to fraction form
    11,425.73/15,767.39 = 6,389.89/x
  3. Step 3: Cross multiply
    11,425.73x = 15,767.39 × 6,389.89
  4. Step 4: Simplify right side
    11,425.73x = 100,751,864.24
  5. Step 5: Solve for x
    x = 100,751,864.24/11,425.73
  6. Step 6: Final answer
    x = 8,817.98

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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.