Home / 20,485.44-28,269.97-11,533.08

Finding the Fourth Proportional to 20,485.44, 28,269.97 and 11,533.08

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Solution

The fourth proportional to 20,485.44, 28,269.97 and 11,533.08 is: 15,915.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,485.44 : 28,269.97 = 11,533.08 : x
  2. Step 2: Convert to fraction form
    20,485.44/28,269.97 = 11,533.08/x
  3. Step 3: Cross multiply
    20,485.44x = 28,269.97 × 11,533.08
  4. Step 4: Simplify right side
    20,485.44x = 326,039,796.77
  5. Step 5: Solve for x
    x = 326,039,796.77/20,485.44
  6. Step 6: Final answer
    x = 15,915.68

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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.