Finding the Fourth Proportional to 20,985,818,869.84, 28,960,359,730.68 and 11,470,365,107.68
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Solution
The fourth proportional to 20,985,818,869.84, 28,960,359,730.68 and 11,470,365,107.68 is: 15,829,065,418.94
Step by Step Solution
- Step 1: Write the proportion equation
20,985,818,869.84 : 28,960,359,730.68 = 11,470,365,107.68 : x - Step 2: Convert to fraction form
20,985,818,869.84/28,960,359,730.68 = 11,470,365,107.68/x - Step 3: Cross multiply
20,985,818,869.84x = 28,960,359,730.68 × 11,470,365,107.68 - Step 4: Simplify right side
20,985,818,869.84x = 332,185,899,760,652,845,056 - Step 5: Solve for x
x = 332,185,899,760,652,845,056/20,985,818,869.84 - Step 6: Final answer
x = 15,829,065,418.94
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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.