Home / 20,556.90-30,816.81-7,400.07

Finding the Fourth Proportional to 20,556.90, 30,816.81 and 7,400.07

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Solution

The fourth proportional to 20,556.90, 30,816.81 and 7,400.07 is: 11,093.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,556.90 : 30,816.81 = 7,400.07 : x
  2. Step 2: Convert to fraction form
    20,556.90/30,816.81 = 7,400.07/x
  3. Step 3: Cross multiply
    20,556.90x = 30,816.81 × 7,400.07
  4. Step 4: Simplify right side
    20,556.90x = 228,046,551.18
  5. Step 5: Solve for x
    x = 228,046,551.18/20,556.90
  6. Step 6: Final answer
    x = 11,093.43

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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.