Home / 21,761.26-30,031.80-12,200.67

Finding the Fourth Proportional to 21,761.26, 30,031.80 and 12,200.67

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Solution

The fourth proportional to 21,761.26, 30,031.80 and 12,200.67 is: 16,837.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,761.26 : 30,031.80 = 12,200.67 : x
  2. Step 2: Convert to fraction form
    21,761.26/30,031.80 = 12,200.67/x
  3. Step 3: Cross multiply
    21,761.26x = 30,031.80 × 12,200.67
  4. Step 4: Simplify right side
    21,761.26x = 366,408,035.55
  5. Step 5: Solve for x
    x = 366,408,035.55/21,761.26
  6. Step 6: Final answer
    x = 16,837.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.