Home / 21,233.21-31,862.09-8,750.90

Finding the Fourth Proportional to 21,233.21, 31,862.09 and 8,750.90

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Solution

The fourth proportional to 21,233.21, 31,862.09 and 8,750.90 is: 13,131.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,233.21 : 31,862.09 = 8,750.90 : x
  2. Step 2: Convert to fraction form
    21,233.21/31,862.09 = 8,750.90/x
  3. Step 3: Cross multiply
    21,233.21x = 31,862.09 × 8,750.90
  4. Step 4: Simplify right side
    21,233.21x = 278,822,064.91
  5. Step 5: Solve for x
    x = 278,822,064.91/21,233.21
  6. Step 6: Final answer
    x = 13,131.42

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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.