Finding the Fourth Proportional to 20,337,149.94, 28,058,438.98 and 11,515,395.49
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Solution
The fourth proportional to 20,337,149.94, 28,058,438.98 and 11,515,395.49 is: 15,887,379.63
Step by Step Solution
- Step 1: Write the proportion equation
20,337,149.94 : 28,058,438.98 = 11,515,395.49 : x - Step 2: Convert to fraction form
20,337,149.94/28,058,438.98 = 11,515,395.49/x - Step 3: Cross multiply
20,337,149.94x = 28,058,438.98 × 11,515,395.49 - Step 4: Simplify right side
20,337,149.94x = 323,104,021,788,809.06 - Step 5: Solve for x
x = 323,104,021,788,809.06/20,337,149.94 - Step 6: Final answer
x = 15,887,379.63
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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.