Finding the Fourth Proportional to 19,995,386.40, 29,993,079.60 and 18,436,492.80
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Solution
The fourth proportional to 19,995,386.40, 29,993,079.60 and 18,436,492.80 is: 27,654,739.20
Step by Step Solution
- Step 1: Write the proportion equation
19,995,386.40 : 29,993,079.60 = 18,436,492.80 : x - Step 2: Convert to fraction form
19,995,386.40/29,993,079.60 = 18,436,492.80/x - Step 3: Cross multiply
19,995,386.40x = 29,993,079.60 × 18,436,492.80 - Step 4: Simplify right side
19,995,386.40x = 552,967,196,095,226.94 - Step 5: Solve for x
x = 552,967,196,095,226.94/19,995,386.40 - Step 6: Final answer
x = 27,654,739.20
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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.