Home / 20,361.88-28,099.46-11,869.04

Finding the Fourth Proportional to 20,361.88, 28,099.46 and 11,869.04

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Solution

The fourth proportional to 20,361.88, 28,099.46 and 11,869.04 is: 16,379.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,361.88 : 28,099.46 = 11,869.04 : x
  2. Step 2: Convert to fraction form
    20,361.88/28,099.46 = 11,869.04/x
  3. Step 3: Cross multiply
    20,361.88x = 28,099.46 × 11,869.04
  4. Step 4: Simplify right side
    20,361.88x = 333,513,614.72
  5. Step 5: Solve for x
    x = 333,513,614.72/20,361.88
  6. Step 6: Final answer
    x = 16,379.31

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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.