Home / 20,399.35-30,599.40-5,608.18

Finding the Fourth Proportional to 20,399.35, 30,599.40 and 5,608.18

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Solution

The fourth proportional to 20,399.35, 30,599.40 and 5,608.18 is: 8,412.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,399.35 : 30,599.40 = 5,608.18 : x
  2. Step 2: Convert to fraction form
    20,399.35/30,599.40 = 5,608.18/x
  3. Step 3: Cross multiply
    20,399.35x = 30,599.40 × 5,608.18
  4. Step 4: Simplify right side
    20,399.35x = 171,606,943.09
  5. Step 5: Solve for x
    x = 171,606,943.09/20,399.35
  6. Step 6: Final answer
    x = 8,412.37

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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.