Home / 21,335.09-31,999.07-6,540.03

Finding the Fourth Proportional to 21,335.09, 31,999.07 and 6,540.03

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Solution

The fourth proportional to 21,335.09, 31,999.07 and 6,540.03 is: 9,808.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,335.09 : 31,999.07 = 6,540.03 : x
  2. Step 2: Convert to fraction form
    21,335.09/31,999.07 = 6,540.03/x
  3. Step 3: Cross multiply
    21,335.09x = 31,999.07 × 6,540.03
  4. Step 4: Simplify right side
    21,335.09x = 209,274,845.07
  5. Step 5: Solve for x
    x = 209,274,845.07/21,335.09
  6. Step 6: Final answer
    x = 9,808.95

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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.