Home / 43,786.80-65,680.20-20,458.80

Finding the Fourth Proportional to 43,786.80, 65,680.20 and 20,458.80

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Solution

The fourth proportional to 43,786.80, 65,680.20 and 20,458.80 is: 30,688.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,786.80 : 65,680.20 = 20,458.80 : x
  2. Step 2: Convert to fraction form
    43,786.80/65,680.20 = 20,458.80/x
  3. Step 3: Cross multiply
    43,786.80x = 65,680.20 × 20,458.80
  4. Step 4: Simplify right side
    43,786.80x = 1,343,738,075.76
  5. Step 5: Solve for x
    x = 1,343,738,075.76/43,786.80
  6. Step 6: Final answer
    x = 30,688.20

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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.