Finding the Fourth Proportional to 13,163,424.16, 18,165,421.20 and 7,362,201.60
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Solution
The fourth proportional to 13,163,424.16, 18,165,421.20 and 7,362,201.60 is: 10,159,779.96
Step by Step Solution
- Step 1: Write the proportion equation
13,163,424.16 : 18,165,421.20 = 7,362,201.60 : x - Step 2: Convert to fraction form
13,163,424.16/18,165,421.20 = 7,362,201.60/x - Step 3: Cross multiply
13,163,424.16x = 18,165,421.20 × 7,362,201.60 - Step 4: Simplify right side
13,163,424.16x = 133,737,493,023,313.91 - Step 5: Solve for x
x = 133,737,493,023,313.91/13,163,424.16 - Step 6: Final answer
x = 10,159,779.96
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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.