Home / 12,760,906.40-19,155,356.40-7,974,000.80

Finding the Fourth Proportional to 12,760,906.40, 19,155,356.40 and 7,974,000.80

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Solution

The fourth proportional to 12,760,906.40, 19,155,356.40 and 7,974,000.80 is: 11,969,747.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,760,906.40 : 19,155,356.40 = 7,974,000.80 : x
  2. Step 2: Convert to fraction form
    12,760,906.40/19,155,356.40 = 7,974,000.80/x
  3. Step 3: Cross multiply
    12,760,906.40x = 19,155,356.40 × 7,974,000.80
  4. Step 4: Simplify right side
    12,760,906.40x = 152,744,827,257,885.09
  5. Step 5: Solve for x
    x = 152,744,827,257,885.09/12,760,906.40
  6. Step 6: Final answer
    x = 11,969,747.48

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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.