Home / 25,981.06-38,986.14-10,399.90

Finding the Fourth Proportional to 25,981.06, 38,986.14 and 10,399.90

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Solution

The fourth proportional to 25,981.06, 38,986.14 and 10,399.90 is: 15,605.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,981.06 : 38,986.14 = 10,399.90 : x
  2. Step 2: Convert to fraction form
    25,981.06/38,986.14 = 10,399.90/x
  3. Step 3: Cross multiply
    25,981.06x = 38,986.14 × 10,399.90
  4. Step 4: Simplify right side
    25,981.06x = 405,451,957.39
  5. Step 5: Solve for x
    x = 405,451,957.39/25,981.06
  6. Step 6: Final answer
    x = 15,605.67

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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.