Finding the Fourth Proportional to 21,304,319,486.40, 29,375,901,797.88 and 15,934,671,465.12
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Solution
The fourth proportional to 21,304,319,486.40, 29,375,901,797.88 and 15,934,671,465.12 is: 21,971,851,503.62
Step by Step Solution
- Step 1: Write the proportion equation
21,304,319,486.40 : 29,375,901,797.88 = 15,934,671,465.12 : x - Step 2: Convert to fraction form
21,304,319,486.40/29,375,901,797.88 = 15,934,671,465.12/x - Step 3: Cross multiply
21,304,319,486.40x = 29,375,901,797.88 × 15,934,671,465.12 - Step 4: Simplify right side
21,304,319,486.40x = 468,095,344,140,845,776,896 - Step 5: Solve for x
x = 468,095,344,140,845,776,896/21,304,319,486.40 - Step 6: Final answer
x = 21,971,851,503.62
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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.