Home / 20,674.72-28,531.34-11,243.35

Finding the Fourth Proportional to 20,674.72, 28,531.34 and 11,243.35

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Solution

The fourth proportional to 20,674.72, 28,531.34 and 11,243.35 is: 15,515.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,674.72 : 28,531.34 = 11,243.35 : x
  2. Step 2: Convert to fraction form
    20,674.72/28,531.34 = 11,243.35/x
  3. Step 3: Cross multiply
    20,674.72x = 28,531.34 × 11,243.35
  4. Step 4: Simplify right side
    20,674.72x = 320,787,841.59
  5. Step 5: Solve for x
    x = 320,787,841.59/20,674.72
  6. Step 6: Final answer
    x = 15,515.95

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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.