Home / 38,189.70-57,301.74-20,638.98

Finding the Fourth Proportional to 38,189.70, 57,301.74 and 20,638.98

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Solution

The fourth proportional to 38,189.70, 57,301.74 and 20,638.98 is: 30,967.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,189.70 : 57,301.74 = 20,638.98 : x
  2. Step 2: Convert to fraction form
    38,189.70/57,301.74 = 20,638.98/x
  3. Step 3: Cross multiply
    38,189.70x = 57,301.74 × 20,638.98
  4. Step 4: Simplify right side
    38,189.70x = 1,182,649,465.83
  5. Step 5: Solve for x
    x = 1,182,649,465.83/38,189.70
  6. Step 6: Final answer
    x = 30,967.76

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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.