Home / 21,112.63-31,664.33-7,074.65

Finding the Fourth Proportional to 21,112.63, 31,664.33 and 7,074.65

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Solution

The fourth proportional to 21,112.63, 31,664.33 and 7,074.65 is: 10,610.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,112.63 : 31,664.33 = 7,074.65 : x
  2. Step 2: Convert to fraction form
    21,112.63/31,664.33 = 7,074.65/x
  3. Step 3: Cross multiply
    21,112.63x = 31,664.33 × 7,074.65
  4. Step 4: Simplify right side
    21,112.63x = 224,014,162.35
  5. Step 5: Solve for x
    x = 224,014,162.35/21,112.63
  6. Step 6: Final answer
    x = 10,610.43

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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.