Home / 21,290.22-31,913.73-10,180.62

Finding the Fourth Proportional to 21,290.22, 31,913.73 and 10,180.62

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Solution

The fourth proportional to 21,290.22, 31,913.73 and 10,180.62 is: 15,260.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,290.22 : 31,913.73 = 10,180.62 : x
  2. Step 2: Convert to fraction form
    21,290.22/31,913.73 = 10,180.62/x
  3. Step 3: Cross multiply
    21,290.22x = 31,913.73 × 10,180.62
  4. Step 4: Simplify right side
    21,290.22x = 324,901,557.91
  5. Step 5: Solve for x
    x = 324,901,557.91/21,290.22
  6. Step 6: Final answer
    x = 15,260.60

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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.