Home / 20,314.45-28,031.67-11,361.77

Finding the Fourth Proportional to 20,314.45, 28,031.67 and 11,361.77

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Solution

The fourth proportional to 20,314.45, 28,031.67 and 11,361.77 is: 15,677.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,314.45 : 28,031.67 = 11,361.77 : x
  2. Step 2: Convert to fraction form
    20,314.45/28,031.67 = 11,361.77/x
  3. Step 3: Cross multiply
    20,314.45x = 28,031.67 × 11,361.77
  4. Step 4: Simplify right side
    20,314.45x = 318,489,352.22
  5. Step 5: Solve for x
    x = 318,489,352.22/20,314.45
  6. Step 6: Final answer
    x = 15,677.97

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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.