Home / 20,313.36-30,449.88-11,530.08

Finding the Fourth Proportional to 20,313.36, 30,449.88 and 11,530.08

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Solution

The fourth proportional to 20,313.36, 30,449.88 and 11,530.08 is: 17,283.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,313.36 : 30,449.88 = 11,530.08 : x
  2. Step 2: Convert to fraction form
    20,313.36/30,449.88 = 11,530.08/x
  3. Step 3: Cross multiply
    20,313.36x = 30,449.88 × 11,530.08
  4. Step 4: Simplify right side
    20,313.36x = 351,089,552.39
  5. Step 5: Solve for x
    x = 351,089,552.39/20,313.36
  6. Step 6: Final answer
    x = 17,283.68

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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.