Home / 20,797.72-28,707.70-16,556.56

Finding the Fourth Proportional to 20,797.72, 28,707.70 and 16,556.56

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Solution

The fourth proportional to 20,797.72, 28,707.70 and 16,556.56 is: 22,853.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,797.72 : 28,707.70 = 16,556.56 : x
  2. Step 2: Convert to fraction form
    20,797.72/28,707.70 = 16,556.56/x
  3. Step 3: Cross multiply
    20,797.72x = 28,707.70 × 16,556.56
  4. Step 4: Simplify right side
    20,797.72x = 475,300,757.51
  5. Step 5: Solve for x
    x = 475,300,757.51/20,797.72
  6. Step 6: Final answer
    x = 22,853.50

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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.