Home / 12,689,493.78-17,511,033.69-6,888,148.23

Finding the Fourth Proportional to 12,689,493.78, 17,511,033.69 and 6,888,148.23

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Solution

The fourth proportional to 12,689,493.78, 17,511,033.69 and 6,888,148.23 is: 9,505,390.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,689,493.78 : 17,511,033.69 = 6,888,148.23 : x
  2. Step 2: Convert to fraction form
    12,689,493.78/17,511,033.69 = 6,888,148.23/x
  3. Step 3: Cross multiply
    12,689,493.78x = 17,511,033.69 × 6,888,148.23
  4. Step 4: Simplify right side
    12,689,493.78x = 120,618,595,717,243.89
  5. Step 5: Solve for x
    x = 120,618,595,717,243.89/12,689,493.78
  6. Step 6: Final answer
    x = 9,505,390.66

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Double scale
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1.5x scale

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.