Home / 20,131,242.10-30,188,989.95-7,345,165.30

Finding the Fourth Proportional to 20,131,242.10, 30,188,989.95 and 7,345,165.30

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Solution

The fourth proportional to 20,131,242.10, 30,188,989.95 and 7,345,165.30 is: 11,014,875.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,131,242.10 : 30,188,989.95 = 7,345,165.30 : x
  2. Step 2: Convert to fraction form
    20,131,242.10/30,188,989.95 = 7,345,165.30/x
  3. Step 3: Cross multiply
    20,131,242.10x = 30,188,989.95 × 7,345,165.30
  4. Step 4: Simplify right side
    20,131,242.10x = 221,743,121,422,788.72
  5. Step 5: Solve for x
    x = 221,743,121,422,788.72/20,131,242.10
  6. Step 6: Final answer
    x = 11,014,875.30

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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.