Finding the Fourth Proportional to 21,498,126, 29,687,130.72 and 13,660,220.40
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Solution
The fourth proportional to 21,498,126, 29,687,130.72 and 13,660,220.40 is: 18,863,632.52
Step by Step Solution
- Step 1: Write the proportion equation
21,498,126 : 29,687,130.72 = 13,660,220.40 : x - Step 2: Convert to fraction form
21,498,126/29,687,130.72 = 13,660,220.40/x - Step 3: Cross multiply
21,498,126x = 29,687,130.72 × 13,660,220.40 - Step 4: Simplify right side
21,498,126x = 405,532,748,678,810.69 - Step 5: Solve for x
x = 405,532,748,678,810.69/21,498,126 - Step 6: Final answer
x = 18,863,632.52
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1.5x scale
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.