Home / 12,689,431.05-17,511,437.04-6,888,216.72

Finding the Fourth Proportional to 12,689,431.05, 17,511,437.04 and 6,888,216.72

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Solution

The fourth proportional to 12,689,431.05, 17,511,437.04 and 6,888,216.72 is: 9,505,751.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,689,431.05 : 17,511,437.04 = 6,888,216.72 : x
  2. Step 2: Convert to fraction form
    12,689,431.05/17,511,437.04 = 6,888,216.72/x
  3. Step 3: Cross multiply
    12,689,431.05x = 17,511,437.04 × 6,888,216.72
  4. Step 4: Simplify right side
    12,689,431.05x = 120,622,573,410,155.30
  5. Step 5: Solve for x
    x = 120,622,573,410,155.30/12,689,431.05
  6. Step 6: Final answer
    x = 9,505,751.12

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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.