Home / 21,222.90-31,835.16-8,073.36

Finding the Fourth Proportional to 21,222.90, 31,835.16 and 8,073.36

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Solution

The fourth proportional to 21,222.90, 31,835.16 and 8,073.36 is: 12,110.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,222.90 : 31,835.16 = 8,073.36 : x
  2. Step 2: Convert to fraction form
    21,222.90/31,835.16 = 8,073.36/x
  3. Step 3: Cross multiply
    21,222.90x = 31,835.16 × 8,073.36
  4. Step 4: Simplify right side
    21,222.90x = 257,016,707.34
  5. Step 5: Solve for x
    x = 257,016,707.34/21,222.90
  6. Step 6: Final answer
    x = 12,110.35

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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.