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Finding the Fourth Proportional to 18,543,984.20, 27,762,832.20 and 18,012,543.20

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Solution

The fourth proportional to 18,543,984.20, 27,762,832.20 and 18,012,543.20 is: 26,967,193.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,543,984.20 : 27,762,832.20 = 18,012,543.20 : x
  2. Step 2: Convert to fraction form
    18,543,984.20/27,762,832.20 = 18,012,543.20/x
  3. Step 3: Cross multiply
    18,543,984.20x = 27,762,832.20 × 18,012,543.20
  4. Step 4: Simplify right side
    18,543,984.20x = 500,079,214,356,851
  5. Step 5: Solve for x
    x = 500,079,214,356,851/18,543,984.20
  6. Step 6: Final answer
    x = 26,967,193.73

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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.