Home / 21,167.55-31,739.33-8,020.35

Finding the Fourth Proportional to 21,167.55, 31,739.33 and 8,020.35

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Solution

The fourth proportional to 21,167.55, 31,739.33 and 8,020.35 is: 12,025.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,167.55 : 31,739.33 = 8,020.35 : x
  2. Step 2: Convert to fraction form
    21,167.55/31,739.33 = 8,020.35/x
  3. Step 3: Cross multiply
    21,167.55x = 31,739.33 × 8,020.35
  4. Step 4: Simplify right side
    21,167.55x = 254,560,495.26
  5. Step 5: Solve for x
    x = 254,560,495.26/21,167.55
  6. Step 6: Final answer
    x = 12,025.98

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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.