Home / 20,915.44-28,863.30-11,483.98

Finding the Fourth Proportional to 20,915.44, 28,863.30 and 11,483.98

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Solution

The fourth proportional to 20,915.44, 28,863.30 and 11,483.98 is: 15,847.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,915.44 : 28,863.30 = 11,483.98 : x
  2. Step 2: Convert to fraction form
    20,915.44/28,863.30 = 11,483.98/x
  3. Step 3: Cross multiply
    20,915.44x = 28,863.30 × 11,483.98
  4. Step 4: Simplify right side
    20,915.44x = 331,465,559.93
  5. Step 5: Solve for x
    x = 331,465,559.93/20,915.44
  6. Step 6: Final answer
    x = 15,847.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.