Finding the Fourth Proportional to 28,446,893.67, 39,256,712.06 and 15,394,152.99
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Solution
The fourth proportional to 28,446,893.67, 39,256,712.06 and 15,394,152.99 is: 21,243,930.47
Step by Step Solution
- Step 1: Write the proportion equation
28,446,893.67 : 39,256,712.06 = 15,394,152.99 : x - Step 2: Convert to fraction form
28,446,893.67/39,256,712.06 = 15,394,152.99/x - Step 3: Cross multiply
28,446,893.67x = 39,256,712.06 × 15,394,152.99 - Step 4: Simplify right side
28,446,893.67x = 604,323,831,259,047.25 - Step 5: Solve for x
x = 604,323,831,259,047.25/28,446,893.67 - Step 6: Final answer
x = 21,243,930.47
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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.