Home / 20,638.05-30,957.09-19,586.25

Finding the Fourth Proportional to 20,638.05, 30,957.09 and 19,586.25

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Solution

The fourth proportional to 20,638.05, 30,957.09 and 19,586.25 is: 29,379.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,638.05 : 30,957.09 = 19,586.25 : x
  2. Step 2: Convert to fraction form
    20,638.05/30,957.09 = 19,586.25/x
  3. Step 3: Cross multiply
    20,638.05x = 30,957.09 × 19,586.25
  4. Step 4: Simplify right side
    20,638.05x = 606,333,304.01
  5. Step 5: Solve for x
    x = 606,333,304.01/20,638.05
  6. Step 6: Final answer
    x = 29,379.39

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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.