Home / 21,227.88-31,816.80-8,741.76

Finding the Fourth Proportional to 21,227.88, 31,816.80 and 8,741.76

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Solution

The fourth proportional to 21,227.88, 31,816.80 and 8,741.76 is: 13,102.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,227.88 : 31,816.80 = 8,741.76 : x
  2. Step 2: Convert to fraction form
    21,227.88/31,816.80 = 8,741.76/x
  3. Step 3: Cross multiply
    21,227.88x = 31,816.80 × 8,741.76
  4. Step 4: Simplify right side
    21,227.88x = 278,134,829.57
  5. Step 5: Solve for x
    x = 278,134,829.57/21,227.88
  6. Step 6: Final answer
    x = 13,102.34

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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.