Home / 12,780,101.40-19,184,148.90-7,993,195.80

Finding the Fourth Proportional to 12,780,101.40, 19,184,148.90 and 7,993,195.80

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Solution

The fourth proportional to 12,780,101.40, 19,184,148.90 and 7,993,195.80 is: 11,998,547.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,780,101.40 : 19,184,148.90 = 7,993,195.80 : x
  2. Step 2: Convert to fraction form
    12,780,101.40/19,184,148.90 = 7,993,195.80/x
  3. Step 3: Cross multiply
    12,780,101.40x = 19,184,148.90 × 7,993,195.80
  4. Step 4: Simplify right side
    12,780,101.40x = 153,342,658,414,054.59
  5. Step 5: Solve for x
    x = 153,342,658,414,054.59/12,780,101.40
  6. Step 6: Final answer
    x = 11,998,547.87

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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.