Finding the Fourth Proportional to 21,205,564,265.35, 29,263,767,075.98 and 11,689,906,969.99
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Solution
The fourth proportional to 21,205,564,265.35, 29,263,767,075.98 and 11,689,906,969.99 is: 16,132,120,344.88
Step by Step Solution
- Step 1: Write the proportion equation
21,205,564,265.35 : 29,263,767,075.98 = 11,689,906,969.99 : x - Step 2: Convert to fraction form
21,205,564,265.35/29,263,767,075.98 = 11,689,906,969.99/x - Step 3: Cross multiply
21,205,564,265.35x = 29,263,767,075.98 × 11,689,906,969.99 - Step 4: Simplify right side
21,205,564,265.35x = 342,090,714,709,662,498,816 - Step 5: Solve for x
x = 342,090,714,709,662,498,816/21,205,564,265.35 - Step 6: Final answer
x = 16,132,120,344.88
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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.