Home / 15,879.20-21,863.30-13,484.43

Finding the Fourth Proportional to 15,879.20, 21,863.30 and 13,484.43

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Solution

The fourth proportional to 15,879.20, 21,863.30 and 13,484.43 is: 18,566.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,879.20 : 21,863.30 = 13,484.43 : x
  2. Step 2: Convert to fraction form
    15,879.20/21,863.30 = 13,484.43/x
  3. Step 3: Cross multiply
    15,879.20x = 21,863.30 × 13,484.43
  4. Step 4: Simplify right side
    15,879.20x = 294,814,071.00
  5. Step 5: Solve for x
    x = 294,814,071.00/15,879.20
  6. Step 6: Final answer
    x = 18,566.06

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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.