Home / 20,370.39-30,550.87-7,886.26

Finding the Fourth Proportional to 20,370.39, 30,550.87 and 7,886.26

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Solution

The fourth proportional to 20,370.39, 30,550.87 and 7,886.26 is: 11,827.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,370.39 : 30,550.87 = 7,886.26 : x
  2. Step 2: Convert to fraction form
    20,370.39/30,550.87 = 7,886.26/x
  3. Step 3: Cross multiply
    20,370.39x = 30,550.87 × 7,886.26
  4. Step 4: Simplify right side
    20,370.39x = 240,932,152.09
  5. Step 5: Solve for x
    x = 240,932,152.09/20,370.39
  6. Step 6: Final answer
    x = 11,827.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.