Home / 12,908,937.80-19,363,406.70-11,515,478.60

Finding the Fourth Proportional to 12,908,937.80, 19,363,406.70 and 11,515,478.60

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Solution

The fourth proportional to 12,908,937.80, 19,363,406.70 and 11,515,478.60 is: 17,273,217.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,908,937.80 : 19,363,406.70 = 11,515,478.60 : x
  2. Step 2: Convert to fraction form
    12,908,937.80/19,363,406.70 = 11,515,478.60/x
  3. Step 3: Cross multiply
    12,908,937.80x = 19,363,406.70 × 11,515,478.60
  4. Step 4: Simplify right side
    12,908,937.80x = 222,978,895,476,946.59
  5. Step 5: Solve for x
    x = 222,978,895,476,946.59/12,908,937.80
  6. Step 6: Final answer
    x = 17,273,217.90

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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.