Finding the Fourth Proportional to 19,401,741.40, 29,102,612.10 and 13,355,123.80
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Solution
The fourth proportional to 19,401,741.40, 29,102,612.10 and 13,355,123.80 is: 20,032,685.70
Step by Step Solution
- Step 1: Write the proportion equation
19,401,741.40 : 29,102,612.10 = 13,355,123.80 : x - Step 2: Convert to fraction form
19,401,741.40/29,102,612.10 = 13,355,123.80/x - Step 3: Cross multiply
19,401,741.40x = 29,102,612.10 × 13,355,123.80 - Step 4: Simplify right side
19,401,741.40x = 388,668,987,498,878 - Step 5: Solve for x
x = 388,668,987,498,878/19,401,741.40 - Step 6: Final answer
x = 20,032,685.70
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1.5x scale
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.