Home / 25,990.11-38,975.40-20,508.03

Finding the Fourth Proportional to 25,990.11, 38,975.40 and 20,508.03

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Solution

The fourth proportional to 25,990.11, 38,975.40 and 20,508.03 is: 30,754.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,990.11 : 38,975.40 = 20,508.03 : x
  2. Step 2: Convert to fraction form
    25,990.11/38,975.40 = 20,508.03/x
  3. Step 3: Cross multiply
    25,990.11x = 38,975.40 × 20,508.03
  4. Step 4: Simplify right side
    25,990.11x = 799,308,672.46
  5. Step 5: Solve for x
    x = 799,308,672.46/25,990.11
  6. Step 6: Final answer
    x = 30,754.34

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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.