Home / 20,130.06-30,184.83-7,640.58

Finding the Fourth Proportional to 20,130.06, 30,184.83 and 7,640.58

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Solution

The fourth proportional to 20,130.06, 30,184.83 and 7,640.58 is: 11,456.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,130.06 : 30,184.83 = 7,640.58 : x
  2. Step 2: Convert to fraction form
    20,130.06/30,184.83 = 7,640.58/x
  3. Step 3: Cross multiply
    20,130.06x = 30,184.83 × 7,640.58
  4. Step 4: Simplify right side
    20,130.06x = 230,629,608.40
  5. Step 5: Solve for x
    x = 230,629,608.40/20,130.06
  6. Step 6: Final answer
    x = 11,456.98

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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.