Home / 20,370.41-28,112.47-11,296.15

Finding the Fourth Proportional to 20,370.41, 28,112.47 and 11,296.15

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Solution

The fourth proportional to 20,370.41, 28,112.47 and 11,296.15 is: 15,589.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,370.41 : 28,112.47 = 11,296.15 : x
  2. Step 2: Convert to fraction form
    20,370.41/28,112.47 = 11,296.15/x
  3. Step 3: Cross multiply
    20,370.41x = 28,112.47 × 11,296.15
  4. Step 4: Simplify right side
    20,370.41x = 317,562,579.47
  5. Step 5: Solve for x
    x = 317,562,579.47/20,370.41
  6. Step 6: Final answer
    x = 15,589.41

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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.