Finding the Fourth Proportional to 20,972,106,785.18, 28,948,404,428.46 and 16,693,169,026.70
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Solution
The fourth proportional to 20,972,106,785.18, 28,948,404,428.46 and 16,693,169,026.70 is: 23,042,063,113.99
Step by Step Solution
- Step 1: Write the proportion equation
20,972,106,785.18 : 28,948,404,428.46 = 16,693,169,026.70 : x - Step 2: Convert to fraction form
20,972,106,785.18/28,948,404,428.46 = 16,693,169,026.70/x - Step 3: Cross multiply
20,972,106,785.18x = 28,948,404,428.46 × 16,693,169,026.70 - Step 4: Simplify right side
20,972,106,785.18x = 483,240,608,177,408,835,584 - Step 5: Solve for x
x = 483,240,608,177,408,835,584/20,972,106,785.18 - Step 6: Final answer
x = 23,042,063,113.99
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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.