Finding the Fourth Proportional to 21,144,430.96, 29,176,974.60 and 11,724,985.12
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Solution
The fourth proportional to 21,144,430.96, 29,176,974.60 and 11,724,985.12 is: 16,179,181.82
Step by Step Solution
- Step 1: Write the proportion equation
21,144,430.96 : 29,176,974.60 = 11,724,985.12 : x - Step 2: Convert to fraction form
21,144,430.96/29,176,974.60 = 11,724,985.12/x - Step 3: Cross multiply
21,144,430.96x = 29,176,974.60 × 11,724,985.12 - Step 4: Simplify right side
21,144,430.96x = 342,099,593,031,617.94 - Step 5: Solve for x
x = 342,099,593,031,617.94/21,144,430.96 - Step 6: Final answer
x = 16,179,181.82
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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.