Home / 21,124.22-31,665.48-11,768.64

Finding the Fourth Proportional to 21,124.22, 31,665.48 and 11,768.64

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Solution

The fourth proportional to 21,124.22, 31,665.48 and 11,768.64 is: 17,641.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,124.22 : 31,665.48 = 11,768.64 : x
  2. Step 2: Convert to fraction form
    21,124.22/31,665.48 = 11,768.64/x
  3. Step 3: Cross multiply
    21,124.22x = 31,665.48 × 11,768.64
  4. Step 4: Simplify right side
    21,124.22x = 372,659,715.99
  5. Step 5: Solve for x
    x = 372,659,715.99/21,124.22
  6. Step 6: Final answer
    x = 17,641.35

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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.