Finding the Fourth Proportional to 21,569,504.90, 29,766,090.94 and 11,911,712.90
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Solution
The fourth proportional to 21,569,504.90, 29,766,090.94 and 11,911,712.90 is: 16,438,259.99
Step by Step Solution
- Step 1: Write the proportion equation
21,569,504.90 : 29,766,090.94 = 11,911,712.90 : x - Step 2: Convert to fraction form
21,569,504.90/29,766,090.94 = 11,911,712.90/x - Step 3: Cross multiply
21,569,504.90x = 29,766,090.94 × 11,911,712.90 - Step 4: Simplify right side
21,569,504.90x = 354,565,129,253,961.38 - Step 5: Solve for x
x = 354,565,129,253,961.38/21,569,504.90 - Step 6: Final answer
x = 16,438,259.99
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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.