Home / 20,915.94-28,863.99-11,484.48

Finding the Fourth Proportional to 20,915.94, 28,863.99 and 11,484.48

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Solution

The fourth proportional to 20,915.94, 28,863.99 and 11,484.48 is: 15,848.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,915.94 : 28,863.99 = 11,484.48 : x
  2. Step 2: Convert to fraction form
    20,915.94/28,863.99 = 11,484.48/x
  3. Step 3: Cross multiply
    20,915.94x = 28,863.99 × 11,484.48
  4. Step 4: Simplify right side
    20,915.94x = 331,487,915.88
  5. Step 5: Solve for x
    x = 331,487,915.88/20,915.94
  6. Step 6: Final answer
    x = 15,848.58

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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.