Finding the Fourth Proportional to 21,294,372,669.19, 29,232,352,528.46 and 18,278,389,365.13
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Solution
The fourth proportional to 21,294,372,669.19, 29,232,352,528.46 and 18,278,389,365.13 is: 25,092,090,284.82
Step by Step Solution
- Step 1: Write the proportion equation
21,294,372,669.19 : 29,232,352,528.46 = 18,278,389,365.13 : x - Step 2: Convert to fraction form
21,294,372,669.19/29,232,352,528.46 = 18,278,389,365.13/x - Step 3: Cross multiply
21,294,372,669.19x = 29,232,352,528.46 × 18,278,389,365.13 - Step 4: Simplify right side
21,294,372,669.19x = 534,320,321,573,934,333,952 - Step 5: Solve for x
x = 534,320,321,573,934,333,952/21,294,372,669.19 - Step 6: Final answer
x = 25,092,090,284.82
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.