Finding the Fourth Proportional to 21,351,389.40, 29,465,412.12 and 12,184,885.08
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Solution
The fourth proportional to 21,351,389.40, 29,465,412.12 and 12,184,885.08 is: 16,815,423.75
Step by Step Solution
- Step 1: Write the proportion equation
21,351,389.40 : 29,465,412.12 = 12,184,885.08 : x - Step 2: Convert to fraction form
21,351,389.40/29,465,412.12 = 12,184,885.08/x - Step 3: Cross multiply
21,351,389.40x = 29,465,412.12 × 12,184,885.08 - Step 4: Simplify right side
21,351,389.40x = 359,032,660,517,039.19 - Step 5: Solve for x
x = 359,032,660,517,039.19/21,351,389.40 - Step 6: Final answer
x = 16,815,423.75
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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.