Home / 21,360.29-32,040.50-8,205.48

Finding the Fourth Proportional to 21,360.29, 32,040.50 and 8,205.48

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Solution

The fourth proportional to 21,360.29, 32,040.50 and 8,205.48 is: 12,308.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,360.29 : 32,040.50 = 8,205.48 : x
  2. Step 2: Convert to fraction form
    21,360.29/32,040.50 = 8,205.48/x
  3. Step 3: Cross multiply
    21,360.29x = 32,040.50 × 8,205.48
  4. Step 4: Simplify right side
    21,360.29x = 262,907,640.91
  5. Step 5: Solve for x
    x = 262,907,640.91/21,360.29
  6. Step 6: Final answer
    x = 12,308.25

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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.