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Finding the Fourth Proportional to 18,515,614.80, 25,858,087.80 and 18,515,614.80

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Solution

The fourth proportional to 18,515,614.80, 25,858,087.80 and 18,515,614.80 is: 25,858,087.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,515,614.80 : 25,858,087.80 = 18,515,614.80 : x
  2. Step 2: Convert to fraction form
    18,515,614.80/25,858,087.80 = 18,515,614.80/x
  3. Step 3: Cross multiply
    18,515,614.80x = 25,858,087.80 × 18,515,614.80
  4. Step 4: Simplify right side
    18,515,614.80x = 478,778,393,169,379.50
  5. Step 5: Solve for x
    x = 478,778,393,169,379.50/18,515,614.80
  6. Step 6: Final answer
    x = 25,858,087.80

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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.