Finding the Fourth Proportional to 15,717,403.68, 21,678,325.26 and 13,878,617.82
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Solution
The fourth proportional to 15,717,403.68, 21,678,325.26 and 13,878,617.82 is: 19,142,168.60
Step by Step Solution
- Step 1: Write the proportion equation
15,717,403.68 : 21,678,325.26 = 13,878,617.82 : x - Step 2: Convert to fraction form
15,717,403.68/21,678,325.26 = 13,878,617.82/x - Step 3: Cross multiply
15,717,403.68x = 21,678,325.26 × 13,878,617.82 - Step 4: Simplify right side
15,717,403.68x = 300,865,191,261,192.19 - Step 5: Solve for x
x = 300,865,191,261,192.19/15,717,403.68 - Step 6: Final answer
x = 19,142,168.60
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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.