Home / 20,996.06-28,975.23-11,436.23

Finding the Fourth Proportional to 20,996.06, 28,975.23 and 11,436.23

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Solution

The fourth proportional to 20,996.06, 28,975.23 and 11,436.23 is: 15,782.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,996.06 : 28,975.23 = 11,436.23 : x
  2. Step 2: Convert to fraction form
    20,996.06/28,975.23 = 11,436.23/x
  3. Step 3: Cross multiply
    20,996.06x = 28,975.23 × 11,436.23
  4. Step 4: Simplify right side
    20,996.06x = 331,367,459.52
  5. Step 5: Solve for x
    x = 331,367,459.52/20,996.06
  6. Step 6: Final answer
    x = 15,782.36

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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.