Home / 21,220.75-31,833.15-8,741.62

Finding the Fourth Proportional to 21,220.75, 31,833.15 and 8,741.62

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Solution

The fourth proportional to 21,220.75, 31,833.15 and 8,741.62 is: 13,113.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,220.75 : 31,833.15 = 8,741.62 : x
  2. Step 2: Convert to fraction form
    21,220.75/31,833.15 = 8,741.62/x
  3. Step 3: Cross multiply
    21,220.75x = 31,833.15 × 8,741.62
  4. Step 4: Simplify right side
    21,220.75x = 278,273,300.70
  5. Step 5: Solve for x
    x = 278,273,300.70/21,220.75
  6. Step 6: Final answer
    x = 13,113.26

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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.