Finding the Fourth Proportional to 21,117,812,174.49, 29,145,079,160.99 and 12,544,272,687.13
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Solution
The fourth proportional to 21,117,812,174.49, 29,145,079,160.99 and 12,544,272,687.13 is: 17,312,580,368.76
Step by Step Solution
- Step 1: Write the proportion equation
21,117,812,174.49 : 29,145,079,160.99 = 12,544,272,687.13 : x - Step 2: Convert to fraction form
21,117,812,174.49/29,145,079,160.99 = 12,544,272,687.13/x - Step 3: Cross multiply
21,117,812,174.49x = 29,145,079,160.99 × 12,544,272,687.13 - Step 4: Simplify right side
21,117,812,174.49x = 365,603,820,483,390,341,120 - Step 5: Solve for x
x = 365,603,820,483,390,341,120/21,117,812,174.49 - Step 6: Final answer
x = 17,312,580,368.76
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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.