Finding the Fourth Proportional to 21,647,420.03, 29,862,113.81 and 13,384,841.09
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Solution
The fourth proportional to 21,647,420.03, 29,862,113.81 and 13,384,841.09 is: 18,464,077.81
Step by Step Solution
- Step 1: Write the proportion equation
21,647,420.03 : 29,862,113.81 = 13,384,841.09 : x - Step 2: Convert to fraction form
21,647,420.03/29,862,113.81 = 13,384,841.09/x - Step 3: Cross multiply
21,647,420.03x = 29,862,113.81 × 13,384,841.09 - Step 4: Simplify right side
21,647,420.03x = 399,699,647,742,109.69 - Step 5: Solve for x
x = 399,699,647,742,109.69/21,647,420.03 - Step 6: Final answer
x = 18,464,077.81
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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.