Finding the Fourth Proportional to 21,589,961.84, 29,791,271.56 and 13,865,468.12
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Solution
The fourth proportional to 21,589,961.84, 29,791,271.56 and 13,865,468.12 is: 19,132,499.13
Step by Step Solution
- Step 1: Write the proportion equation
21,589,961.84 : 29,791,271.56 = 13,865,468.12 : x - Step 2: Convert to fraction form
21,589,961.84/29,791,271.56 = 13,865,468.12/x - Step 3: Cross multiply
21,589,961.84x = 29,791,271.56 × 13,865,468.12 - Step 4: Simplify right side
21,589,961.84x = 413,069,926,069,442.62 - Step 5: Solve for x
x = 413,069,926,069,442.62/21,589,961.84 - Step 6: Final answer
x = 19,132,499.13
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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.