Home / 20,436.44-28,176.26-13,711.41

Finding the Fourth Proportional to 20,436.44, 28,176.26 and 13,711.41

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Solution

The fourth proportional to 20,436.44, 28,176.26 and 13,711.41 is: 18,904.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,436.44 : 28,176.26 = 13,711.41 : x
  2. Step 2: Convert to fraction form
    20,436.44/28,176.26 = 13,711.41/x
  3. Step 3: Cross multiply
    20,436.44x = 28,176.26 × 13,711.41
  4. Step 4: Simplify right side
    20,436.44x = 386,336,184.57
  5. Step 5: Solve for x
    x = 386,336,184.57/20,436.44
  6. Step 6: Final answer
    x = 18,904.28

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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.