Home / 9,930.78-13,704.44-5,623.80

Finding the Fourth Proportional to 9,930.78, 13,704.44 and 5,623.80

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Solution

The fourth proportional to 9,930.78, 13,704.44 and 5,623.80 is: 7,760.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,930.78 : 13,704.44 = 5,623.80 : x
  2. Step 2: Convert to fraction form
    9,930.78/13,704.44 = 5,623.80/x
  3. Step 3: Cross multiply
    9,930.78x = 13,704.44 × 5,623.80
  4. Step 4: Simplify right side
    9,930.78x = 77,071,029.67
  5. Step 5: Solve for x
    x = 77,071,029.67/9,930.78
  6. Step 6: Final answer
    x = 7,760.82

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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.