Home / 15,231.06-21,021.30-8,943.39

Finding the Fourth Proportional to 15,231.06, 21,021.30 and 8,943.39

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Solution

The fourth proportional to 15,231.06, 21,021.30 and 8,943.39 is: 12,343.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,231.06 : 21,021.30 = 8,943.39 : x
  2. Step 2: Convert to fraction form
    15,231.06/21,021.30 = 8,943.39/x
  3. Step 3: Cross multiply
    15,231.06x = 21,021.30 × 8,943.39
  4. Step 4: Simplify right side
    15,231.06x = 188,001,684.21
  5. Step 5: Solve for x
    x = 188,001,684.21/15,231.06
  6. Step 6: Final answer
    x = 12,343.31

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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.