Finding the Fourth Proportional to 13,579,151.70, 18,739,722.09 and 7,779,054.42
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Solution
The fourth proportional to 13,579,151.70, 18,739,722.09 and 7,779,054.42 is: 10,735,377.38
Step by Step Solution
- Step 1: Write the proportion equation
13,579,151.70 : 18,739,722.09 = 7,779,054.42 : x - Step 2: Convert to fraction form
13,579,151.70/18,739,722.09 = 7,779,054.42/x - Step 3: Cross multiply
13,579,151.70x = 18,739,722.09 × 7,779,054.42 - Step 4: Simplify right side
13,579,151.70x = 145,777,317,953,786.12 - Step 5: Solve for x
x = 145,777,317,953,786.12/13,579,151.70 - Step 6: Final answer
x = 10,735,377.38
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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.