Home / 12,780,102.40-19,184,150.40-7,993,196.80

Finding the Fourth Proportional to 12,780,102.40, 19,184,150.40 and 7,993,196.80

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Solution

The fourth proportional to 12,780,102.40, 19,184,150.40 and 7,993,196.80 is: 11,998,549.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,780,102.40 : 19,184,150.40 = 7,993,196.80 : x
  2. Step 2: Convert to fraction form
    12,780,102.40/19,184,150.40 = 7,993,196.80/x
  3. Step 3: Cross multiply
    12,780,102.40x = 19,184,150.40 × 7,993,196.80
  4. Step 4: Simplify right side
    12,780,102.40x = 153,342,689,587,998.72
  5. Step 5: Solve for x
    x = 153,342,689,587,998.72/12,780,102.40
  6. Step 6: Final answer
    x = 11,998,549.37

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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.