Home / 21,291.22-31,937.03-7,440.26

Finding the Fourth Proportional to 21,291.22, 31,937.03 and 7,440.26

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Solution

The fourth proportional to 21,291.22, 31,937.03 and 7,440.26 is: 11,160.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,291.22 : 31,937.03 = 7,440.26 : x
  2. Step 2: Convert to fraction form
    21,291.22/31,937.03 = 7,440.26/x
  3. Step 3: Cross multiply
    21,291.22x = 31,937.03 × 7,440.26
  4. Step 4: Simplify right side
    21,291.22x = 237,619,806.83
  5. Step 5: Solve for x
    x = 237,619,806.83/21,291.22
  6. Step 6: Final answer
    x = 11,160.46

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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.