Home / 12,999,428.70-17,938,992.42-7,198,085.85

Finding the Fourth Proportional to 12,999,428.70, 17,938,992.42 and 7,198,085.85

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Solution

The fourth proportional to 12,999,428.70, 17,938,992.42 and 7,198,085.85 is: 9,933,237.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,999,428.70 : 17,938,992.42 = 7,198,085.85 : x
  2. Step 2: Convert to fraction form
    12,999,428.70/17,938,992.42 = 7,198,085.85/x
  3. Step 3: Cross multiply
    12,999,428.70x = 17,938,992.42 × 7,198,085.85
  4. Step 4: Simplify right side
    12,999,428.70x = 129,126,407,501,659.27
  5. Step 5: Solve for x
    x = 129,126,407,501,659.27/12,999,428.70
  6. Step 6: Final answer
    x = 9,933,237.10

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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.