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Finding the Fourth Proportional to 14,004.53, 20,984.91 and 11,915.94

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Solution

The fourth proportional to 14,004.53, 20,984.91 and 11,915.94 is: 17,855.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,004.53 : 20,984.91 = 11,915.94 : x
  2. Step 2: Convert to fraction form
    14,004.53/20,984.91 = 11,915.94/x
  3. Step 3: Cross multiply
    14,004.53x = 20,984.91 × 11,915.94
  4. Step 4: Simplify right side
    14,004.53x = 250,054,928.47
  5. Step 5: Solve for x
    x = 250,054,928.47/14,004.53
  6. Step 6: Final answer
    x = 17,855.29

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1.5x scale

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.