Home / 20,276.09-30,415.73-7,131.41

Finding the Fourth Proportional to 20,276.09, 30,415.73 and 7,131.41

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Solution

The fourth proportional to 20,276.09, 30,415.73 and 7,131.41 is: 10,697.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,276.09 : 30,415.73 = 7,131.41 : x
  2. Step 2: Convert to fraction form
    20,276.09/30,415.73 = 7,131.41/x
  3. Step 3: Cross multiply
    20,276.09x = 30,415.73 × 7,131.41
  4. Step 4: Simplify right side
    20,276.09x = 216,907,041.08
  5. Step 5: Solve for x
    x = 216,907,041.08/20,276.09
  6. Step 6: Final answer
    x = 10,697.68

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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.