Finding the Fourth Proportional to 13,135,916.34, 18,127,456.16 and 7,175,328.03
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Solution
The fourth proportional to 13,135,916.34, 18,127,456.16 and 7,175,328.03 is: 9,901,893.47
Step by Step Solution
- Step 1: Write the proportion equation
13,135,916.34 : 18,127,456.16 = 7,175,328.03 : x - Step 2: Convert to fraction form
13,135,916.34/18,127,456.16 = 7,175,328.03/x - Step 3: Cross multiply
13,135,916.34x = 18,127,456.16 × 7,175,328.03 - Step 4: Simplify right side
13,135,916.34x = 130,070,444,261,567.53 - Step 5: Solve for x
x = 130,070,444,261,567.53/13,135,916.34 - Step 6: Final answer
x = 9,901,893.47
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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.