Home / 20,361.26-28,099.66-11,411.63

Finding the Fourth Proportional to 20,361.26, 28,099.66 and 11,411.63

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Solution

The fourth proportional to 20,361.26, 28,099.66 and 11,411.63 is: 15,748.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,361.26 : 28,099.66 = 11,411.63 : x
  2. Step 2: Convert to fraction form
    20,361.26/28,099.66 = 11,411.63/x
  3. Step 3: Cross multiply
    20,361.26x = 28,099.66 × 11,411.63
  4. Step 4: Simplify right side
    20,361.26x = 320,663,038.85
  5. Step 5: Solve for x
    x = 320,663,038.85/20,361.26
  6. Step 6: Final answer
    x = 15,748.69

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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.