Home / 21,170.88-31,762.47-9,481.35

Finding the Fourth Proportional to 21,170.88, 31,762.47 and 9,481.35

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Solution

The fourth proportional to 21,170.88, 31,762.47 and 9,481.35 is: 14,224.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,170.88 : 31,762.47 = 9,481.35 : x
  2. Step 2: Convert to fraction form
    21,170.88/31,762.47 = 9,481.35/x
  3. Step 3: Cross multiply
    21,170.88x = 31,762.47 × 9,481.35
  4. Step 4: Simplify right side
    21,170.88x = 301,151,094.93
  5. Step 5: Solve for x
    x = 301,151,094.93/21,170.88
  6. Step 6: Final answer
    x = 14,224.78

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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.