Home / 13,458,679.20-20,188,018.80-7,789,975.20

Finding the Fourth Proportional to 13,458,679.20, 20,188,018.80 and 7,789,975.20

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Solution

The fourth proportional to 13,458,679.20, 20,188,018.80 and 7,789,975.20 is: 11,684,962.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,458,679.20 : 20,188,018.80 = 7,789,975.20 : x
  2. Step 2: Convert to fraction form
    13,458,679.20/20,188,018.80 = 7,789,975.20/x
  3. Step 3: Cross multiply
    13,458,679.20x = 20,188,018.80 × 7,789,975.20
  4. Step 4: Simplify right side
    13,458,679.20x = 157,264,165,789,133.78
  5. Step 5: Solve for x
    x = 157,264,165,789,133.78/13,458,679.20
  6. Step 6: Final answer
    x = 11,684,962.80

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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.