Home / 12,778,945.70-19,168,418.55-7,992,040.10

Finding the Fourth Proportional to 12,778,945.70, 19,168,418.55 and 7,992,040.10

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Solution

The fourth proportional to 12,778,945.70, 19,168,418.55 and 7,992,040.10 is: 11,988,060.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,778,945.70 : 19,168,418.55 = 7,992,040.10 : x
  2. Step 2: Convert to fraction form
    12,778,945.70/19,168,418.55 = 7,992,040.10/x
  3. Step 3: Cross multiply
    12,778,945.70x = 19,168,418.55 × 7,992,040.10
  4. Step 4: Simplify right side
    12,778,945.70x = 153,194,769,705,183.84
  5. Step 5: Solve for x
    x = 153,194,769,705,183.84/12,778,945.70
  6. Step 6: Final answer
    x = 11,988,060.15

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1.5x scale

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.