Home / 20,884.56-28,820.44-11,453.08

Finding the Fourth Proportional to 20,884.56, 28,820.44 and 11,453.08

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Solution

The fourth proportional to 20,884.56, 28,820.44 and 11,453.08 is: 15,805.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,884.56 : 28,820.44 = 11,453.08 : x
  2. Step 2: Convert to fraction form
    20,884.56/28,820.44 = 11,453.08/x
  3. Step 3: Cross multiply
    20,884.56x = 28,820.44 × 11,453.08
  4. Step 4: Simplify right side
    20,884.56x = 330,082,804.96
  5. Step 5: Solve for x
    x = 330,082,804.96/20,884.56
  6. Step 6: Final answer
    x = 15,805.11

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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.