Home / 21,324.33-31,986.43-8,830.62

Finding the Fourth Proportional to 21,324.33, 31,986.43 and 8,830.62

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Solution

The fourth proportional to 21,324.33, 31,986.43 and 8,830.62 is: 13,245.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,324.33 : 31,986.43 = 8,830.62 : x
  2. Step 2: Convert to fraction form
    21,324.33/31,986.43 = 8,830.62/x
  3. Step 3: Cross multiply
    21,324.33x = 31,986.43 × 8,830.62
  4. Step 4: Simplify right side
    21,324.33x = 282,459,986.41
  5. Step 5: Solve for x
    x = 282,459,986.41/21,324.33
  6. Step 6: Final answer
    x = 13,245.90

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1.5x scale

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.