Finding the Fourth Proportional to 13,181,876.20, 19,739,636.70 and 8,669,722.60
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Solution
The fourth proportional to 13,181,876.20, 19,739,636.70 and 8,669,722.60 is: 12,982,762.99
Step by Step Solution
- Step 1: Write the proportion equation
13,181,876.20 : 19,739,636.70 = 8,669,722.60 : x - Step 2: Convert to fraction form
13,181,876.20/19,739,636.70 = 8,669,722.60/x - Step 3: Cross multiply
13,181,876.20x = 19,739,636.70 × 8,669,722.60 - Step 4: Simplify right side
13,181,876.20x = 171,137,174,413,779.41 - Step 5: Solve for x
x = 171,137,174,413,779.41/13,181,876.20 - Step 6: Final answer
x = 12,982,762.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.