Home / 15,790.72-21,782.64-10,192

Finding the Fourth Proportional to 15,790.72, 21,782.64 and 10,192

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Solution

The fourth proportional to 15,790.72, 21,782.64 and 10,192 is: 14,059.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,790.72 : 21,782.64 = 10,192 : x
  2. Step 2: Convert to fraction form
    15,790.72/21,782.64 = 10,192/x
  3. Step 3: Cross multiply
    15,790.72x = 21,782.64 × 10,192
  4. Step 4: Simplify right side
    15,790.72x = 222,008,666.88
  5. Step 5: Solve for x
    x = 222,008,666.88/15,790.72
  6. Step 6: Final answer
    x = 14,059.44

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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.