Home / 20,533.91-28,336.79-11,102.47

Finding the Fourth Proportional to 20,533.91, 28,336.79 and 11,102.47

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Solution

The fourth proportional to 20,533.91, 28,336.79 and 11,102.47 is: 15,321.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,533.91 : 28,336.79 = 11,102.47 : x
  2. Step 2: Convert to fraction form
    20,533.91/28,336.79 = 11,102.47/x
  3. Step 3: Cross multiply
    20,533.91x = 28,336.79 × 11,102.47
  4. Step 4: Simplify right side
    20,533.91x = 314,608,255.33
  5. Step 5: Solve for x
    x = 314,608,255.33/20,533.91
  6. Step 6: Final answer
    x = 15,321.40

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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.