Home / 12,790,511.35-17,650,952.70-6,989,293.98

Finding the Fourth Proportional to 12,790,511.35, 17,650,952.70 and 6,989,293.98

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Solution

The fourth proportional to 12,790,511.35, 17,650,952.70 and 6,989,293.98 is: 9,645,251.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,790,511.35 : 17,650,952.70 = 6,989,293.98 : x
  2. Step 2: Convert to fraction form
    12,790,511.35/17,650,952.70 = 6,989,293.98/x
  3. Step 3: Cross multiply
    12,790,511.35x = 17,650,952.70 × 6,989,293.98
  4. Step 4: Simplify right side
    12,790,511.35x = 123,367,697,421,164.89
  5. Step 5: Solve for x
    x = 123,367,697,421,164.89/12,790,511.35
  6. Step 6: Final answer
    x = 9,645,251.40

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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.