Home / 12,790.72-19,184-9,081.73

Finding the Fourth Proportional to 12,790.72, 19,184 and 9,081.73

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Solution

The fourth proportional to 12,790.72, 19,184 and 9,081.73 is: 13,621.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,790.72 : 19,184 = 9,081.73 : x
  2. Step 2: Convert to fraction form
    12,790.72/19,184 = 9,081.73/x
  3. Step 3: Cross multiply
    12,790.72x = 19,184 × 9,081.73
  4. Step 4: Simplify right side
    12,790.72x = 174,223,908.32
  5. Step 5: Solve for x
    x = 174,223,908.32/12,790.72
  6. Step 6: Final answer
    x = 13,621.12

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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.