Home / 20,674.58-28,530.56-11,243.07

Finding the Fourth Proportional to 20,674.58, 28,530.56 and 11,243.07

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Solution

The fourth proportional to 20,674.58, 28,530.56 and 11,243.07 is: 15,515.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,674.58 : 28,530.56 = 11,243.07 : x
  2. Step 2: Convert to fraction form
    20,674.58/28,530.56 = 11,243.07/x
  3. Step 3: Cross multiply
    20,674.58x = 28,530.56 × 11,243.07
  4. Step 4: Simplify right side
    20,674.58x = 320,771,111.33
  5. Step 5: Solve for x
    x = 320,771,111.33/20,674.58
  6. Step 6: Final answer
    x = 15,515.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.