Home / 21,257.40-31,873.34-8,110.76

Finding the Fourth Proportional to 21,257.40, 31,873.34 and 8,110.76

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Solution

The fourth proportional to 21,257.40, 31,873.34 and 8,110.76 is: 12,161.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,257.40 : 31,873.34 = 8,110.76 : x
  2. Step 2: Convert to fraction form
    21,257.40/31,873.34 = 8,110.76/x
  3. Step 3: Cross multiply
    21,257.40x = 31,873.34 × 8,110.76
  4. Step 4: Simplify right side
    21,257.40x = 258,517,011.14
  5. Step 5: Solve for x
    x = 258,517,011.14/21,257.40
  6. Step 6: Final answer
    x = 12,161.27

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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.