Home / 20,289.14-28,003.69-13,203.26

Finding the Fourth Proportional to 20,289.14, 28,003.69 and 13,203.26

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Solution

The fourth proportional to 20,289.14, 28,003.69 and 13,203.26 is: 18,223.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,289.14 : 28,003.69 = 13,203.26 : x
  2. Step 2: Convert to fraction form
    20,289.14/28,003.69 = 13,203.26/x
  3. Step 3: Cross multiply
    20,289.14x = 28,003.69 × 13,203.26
  4. Step 4: Simplify right side
    20,289.14x = 369,740,000.03
  5. Step 5: Solve for x
    x = 369,740,000.03/20,289.14
  6. Step 6: Final answer
    x = 18,223.54

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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.