Finding the Fourth Proportional to 28,449,122.94, 39,259,646.19 and 15,396,385.23
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Solution
The fourth proportional to 28,449,122.94, 39,259,646.19 and 15,396,385.23 is: 21,246,933.97
Step by Step Solution
- Step 1: Write the proportion equation
28,449,122.94 : 39,259,646.19 = 15,396,385.23 : x - Step 2: Convert to fraction form
28,449,122.94/39,259,646.19 = 15,396,385.23/x - Step 3: Cross multiply
28,449,122.94x = 39,259,646.19 × 15,396,385.23 - Step 4: Simplify right side
28,449,122.94x = 604,456,636,734,741.75 - Step 5: Solve for x
x = 604,456,636,734,741.75/28,449,122.94 - Step 6: Final answer
x = 21,246,933.97
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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.