Finding the Fourth Proportional to 18,926,971.79, 26,127,939.97 and 11,085,395.81
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Solution
The fourth proportional to 18,926,971.79, 26,127,939.97 and 11,085,395.81 is: 15,302,952.81
Step by Step Solution
- Step 1: Write the proportion equation
18,926,971.79 : 26,127,939.97 = 11,085,395.81 : x - Step 2: Convert to fraction form
18,926,971.79/26,127,939.97 = 11,085,395.81/x - Step 3: Cross multiply
18,926,971.79x = 26,127,939.97 × 11,085,395.81 - Step 4: Simplify right side
18,926,971.79x = 289,638,556,109,016.31 - Step 5: Solve for x
x = 289,638,556,109,016.31/18,926,971.79 - Step 6: Final answer
x = 15,302,952.81
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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.