Home / 20,914.40-28,865.26-16,141.28

Finding the Fourth Proportional to 20,914.40, 28,865.26 and 16,141.28

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Solution

The fourth proportional to 20,914.40, 28,865.26 and 16,141.28 is: 22,277.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,914.40 : 28,865.26 = 16,141.28 : x
  2. Step 2: Convert to fraction form
    20,914.40/28,865.26 = 16,141.28/x
  3. Step 3: Cross multiply
    20,914.40x = 28,865.26 × 16,141.28
  4. Step 4: Simplify right side
    20,914.40x = 465,922,119.78
  5. Step 5: Solve for x
    x = 465,922,119.78/20,914.40
  6. Step 6: Final answer
    x = 22,277.57

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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.