Home / 20,674.36-28,472.34-20,609.56

Finding the Fourth Proportional to 20,674.36, 28,472.34 and 20,609.56

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Solution

The fourth proportional to 20,674.36, 28,472.34 and 20,609.56 is: 28,383.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,674.36 : 28,472.34 = 20,609.56 : x
  2. Step 2: Convert to fraction form
    20,674.36/28,472.34 = 20,609.56/x
  3. Step 3: Cross multiply
    20,674.36x = 28,472.34 × 20,609.56
  4. Step 4: Simplify right side
    20,674.36x = 586,802,399.57
  5. Step 5: Solve for x
    x = 586,802,399.57/20,674.36
  6. Step 6: Final answer
    x = 28,383.10

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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.