Finding the Fourth Proportional to 21,243,164.81, 31,864,642.07 and 18,355,745.07
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Solution
The fourth proportional to 21,243,164.81, 31,864,642.07 and 18,355,745.07 is: 27,533,526.75
Step by Step Solution
- Step 1: Write the proportion equation
21,243,164.81 : 31,864,642.07 = 18,355,745.07 : x - Step 2: Convert to fraction form
21,243,164.81/31,864,642.07 = 18,355,745.07/x - Step 3: Cross multiply
21,243,164.81x = 31,864,642.07 × 18,355,745.07 - Step 4: Simplify right side
21,243,164.81x = 584,899,246,491,938.38 - Step 5: Solve for x
x = 584,899,246,491,938.38/21,243,164.81 - Step 6: Final answer
x = 27,533,526.75
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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.