Home / 20,838.24-31,247.90-8,986.41

Finding the Fourth Proportional to 20,838.24, 31,247.90 and 8,986.41

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Solution

The fourth proportional to 20,838.24, 31,247.90 and 8,986.41 is: 13,475.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,838.24 : 31,247.90 = 8,986.41 : x
  2. Step 2: Convert to fraction form
    20,838.24/31,247.90 = 8,986.41/x
  3. Step 3: Cross multiply
    20,838.24x = 31,247.90 × 8,986.41
  4. Step 4: Simplify right side
    20,838.24x = 280,806,323.25
  5. Step 5: Solve for x
    x = 280,806,323.25/20,838.24
  6. Step 6: Final answer
    x = 13,475.53

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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.