Home / 20,640.94-28,484.49-12,257.44

Finding the Fourth Proportional to 20,640.94, 28,484.49 and 12,257.44

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Solution

The fourth proportional to 20,640.94, 28,484.49 and 12,257.44 is: 16,915.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,640.94 : 28,484.49 = 12,257.44 : x
  2. Step 2: Convert to fraction form
    20,640.94/28,484.49 = 12,257.44/x
  3. Step 3: Cross multiply
    20,640.94x = 28,484.49 × 12,257.44
  4. Step 4: Simplify right side
    20,640.94x = 349,146,901.86
  5. Step 5: Solve for x
    x = 349,146,901.86/20,640.94
  6. Step 6: Final answer
    x = 16,915.26

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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.