Home / 20,400.85-30,599.79-5,608.63

Finding the Fourth Proportional to 20,400.85, 30,599.79 and 5,608.63

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Solution

The fourth proportional to 20,400.85, 30,599.79 and 5,608.63 is: 8,412.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,400.85 : 30,599.79 = 5,608.63 : x
  2. Step 2: Convert to fraction form
    20,400.85/30,599.79 = 5,608.63/x
  3. Step 3: Cross multiply
    20,400.85x = 30,599.79 × 5,608.63
  4. Step 4: Simplify right side
    20,400.85x = 171,622,900.19
  5. Step 5: Solve for x
    x = 171,622,900.19/20,400.85
  6. Step 6: Final answer
    x = 8,412.54

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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.