Finding the Fourth Proportional to 13,144,854.79, 18,138,949.38 and 7,264,418.68
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Solution
The fourth proportional to 13,144,854.79, 18,138,949.38 and 7,264,418.68 is: 10,024,372.64
Step by Step Solution
- Step 1: Write the proportion equation
13,144,854.79 : 18,138,949.38 = 7,264,418.68 : x - Step 2: Convert to fraction form
13,144,854.79/18,138,949.38 = 7,264,418.68/x - Step 3: Cross multiply
13,144,854.79x = 18,138,949.38 × 7,264,418.68 - Step 4: Simplify right side
13,144,854.79x = 131,768,922,734,320.11 - Step 5: Solve for x
x = 131,768,922,734,320.11/13,144,854.79 - Step 6: Final answer
x = 10,024,372.64
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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.