Home / 21,470.00-29,631.22-13,512.08

Finding the Fourth Proportional to 21,470.00, 29,631.22 and 13,512.08

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Solution

The fourth proportional to 21,470.00, 29,631.22 and 13,512.08 is: 18,648.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,470.00 : 29,631.22 = 13,512.08 : x
  2. Step 2: Convert to fraction form
    21,470.00/29,631.22 = 13,512.08/x
  3. Step 3: Cross multiply
    21,470.00x = 29,631.22 × 13,512.08
  4. Step 4: Simplify right side
    21,470.00x = 400,379,455.44
  5. Step 5: Solve for x
    x = 400,379,455.44/21,470.00
  6. Step 6: Final answer
    x = 18,648.33

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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.