Home / 19,977.72-29,979.94-8,290.93

Finding the Fourth Proportional to 19,977.72, 29,979.94 and 8,290.93

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Solution

The fourth proportional to 19,977.72, 29,979.94 and 8,290.93 is: 12,441.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,977.72 : 29,979.94 = 8,290.93 : x
  2. Step 2: Convert to fraction form
    19,977.72/29,979.94 = 8,290.93/x
  3. Step 3: Cross multiply
    19,977.72x = 29,979.94 × 8,290.93
  4. Step 4: Simplify right side
    19,977.72x = 248,561,583.94
  5. Step 5: Solve for x
    x = 248,561,583.94/19,977.72
  6. Step 6: Final answer
    x = 12,441.94

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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.