Home / 20,365.74-30,483.54-13,289.16

Finding the Fourth Proportional to 20,365.74, 30,483.54 and 13,289.16

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Solution

The fourth proportional to 20,365.74, 30,483.54 and 13,289.16 is: 19,891.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,365.74 : 30,483.54 = 13,289.16 : x
  2. Step 2: Convert to fraction form
    20,365.74/30,483.54 = 13,289.16/x
  3. Step 3: Cross multiply
    20,365.74x = 30,483.54 × 13,289.16
  4. Step 4: Simplify right side
    20,365.74x = 405,100,640.43
  5. Step 5: Solve for x
    x = 405,100,640.43/20,365.74
  6. Step 6: Final answer
    x = 19,891.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.