Home / 20,407.94-28,161.41-11,453.72

Finding the Fourth Proportional to 20,407.94, 28,161.41 and 11,453.72

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Solution

The fourth proportional to 20,407.94, 28,161.41 and 11,453.72 is: 15,805.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,407.94 : 28,161.41 = 11,453.72 : x
  2. Step 2: Convert to fraction form
    20,407.94/28,161.41 = 11,453.72/x
  3. Step 3: Cross multiply
    20,407.94x = 28,161.41 × 11,453.72
  4. Step 4: Simplify right side
    20,407.94x = 322,552,706.87
  5. Step 5: Solve for x
    x = 322,552,706.87/20,407.94
  6. Step 6: Final answer
    x = 15,805.26

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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.