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Finding the Fourth Proportional to 13,598,979.60, 20,398,469.40 and 13,598,979.60

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Solution

The fourth proportional to 13,598,979.60, 20,398,469.40 and 13,598,979.60 is: 20,398,469.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,598,979.60 : 20,398,469.40 = 13,598,979.60 : x
  2. Step 2: Convert to fraction form
    13,598,979.60/20,398,469.40 = 13,598,979.60/x
  3. Step 3: Cross multiply
    13,598,979.60x = 20,398,469.40 × 13,598,979.60
  4. Step 4: Simplify right side
    13,598,979.60x = 277,398,369,241,824.22
  5. Step 5: Solve for x
    x = 277,398,369,241,824.22/13,598,979.60
  6. Step 6: Final answer
    x = 20,398,469.40

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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.