Home / 12,788,158.74-17,647,912.97-6,987,300.40

Finding the Fourth Proportional to 12,788,158.74, 17,647,912.97 and 6,987,300.40

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Solution

The fourth proportional to 12,788,158.74, 17,647,912.97 and 6,987,300.40 is: 9,642,613.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,788,158.74 : 17,647,912.97 = 6,987,300.40 : x
  2. Step 2: Convert to fraction form
    12,788,158.74/17,647,912.97 = 6,987,300.40/x
  3. Step 3: Cross multiply
    12,788,158.74x = 17,647,912.97 × 6,987,300.40
  4. Step 4: Simplify right side
    12,788,158.74x = 123,311,269,354,446.19
  5. Step 5: Solve for x
    x = 123,311,269,354,446.19/12,788,158.74
  6. Step 6: Final answer
    x = 9,642,613.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.