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Finding the Fourth Proportional to 18,892,040.40, 28,296,070.20 and 18,892,040.40

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Solution

The fourth proportional to 18,892,040.40, 28,296,070.20 and 18,892,040.40 is: 28,296,070.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,892,040.40 : 28,296,070.20 = 18,892,040.40 : x
  2. Step 2: Convert to fraction form
    18,892,040.40/28,296,070.20 = 18,892,040.40/x
  3. Step 3: Cross multiply
    18,892,040.40x = 28,296,070.20 × 18,892,040.40
  4. Step 4: Simplify right side
    18,892,040.40x = 534,570,501,379,636
  5. Step 5: Solve for x
    x = 534,570,501,379,636/18,892,040.40
  6. Step 6: Final answer
    x = 28,296,070.20

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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.