Home / 21,308.07-31,962.38-8,161.23

Finding the Fourth Proportional to 21,308.07, 31,962.38 and 8,161.23

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Solution

The fourth proportional to 21,308.07, 31,962.38 and 8,161.23 is: 12,241.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,308.07 : 31,962.38 = 8,161.23 : x
  2. Step 2: Convert to fraction form
    21,308.07/31,962.38 = 8,161.23/x
  3. Step 3: Cross multiply
    21,308.07x = 31,962.38 × 8,161.23
  4. Step 4: Simplify right side
    21,308.07x = 260,852,293.72
  5. Step 5: Solve for x
    x = 260,852,293.72/21,308.07
  6. Step 6: Final answer
    x = 12,241.95

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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.