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Finding the Fourth Proportional to 14,579.70, 20,469.90 and 14,579.70

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Solution

The fourth proportional to 14,579.70, 20,469.90 and 14,579.70 is: 20,469.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,579.70 : 20,469.90 = 14,579.70 : x
  2. Step 2: Convert to fraction form
    14,579.70/20,469.90 = 14,579.70/x
  3. Step 3: Cross multiply
    14,579.70x = 20,469.90 × 14,579.70
  4. Step 4: Simplify right side
    14,579.70x = 298,445,001.03
  5. Step 5: Solve for x
    x = 298,445,001.03/14,579.70
  6. Step 6: Final answer
    x = 20,469.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.