Finding the Fourth Proportional to 13,122,145.80, 19,683,218.70 and 12,282,337.80
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Solution
The fourth proportional to 13,122,145.80, 19,683,218.70 and 12,282,337.80 is: 18,423,506.70
Step by Step Solution
- Step 1: Write the proportion equation
13,122,145.80 : 19,683,218.70 = 12,282,337.80 : x - Step 2: Convert to fraction form
13,122,145.80/19,683,218.70 = 12,282,337.80/x - Step 3: Cross multiply
13,122,145.80x = 19,683,218.70 × 12,282,337.80 - Step 4: Simplify right side
13,122,145.80x = 241,755,941,064,676.88 - Step 5: Solve for x
x = 241,755,941,064,676.88/13,122,145.80 - Step 6: Final answer
x = 18,423,506.70
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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.