Finding the Fourth Proportional to 19,890,987.84, 27,447,107.76 and 12,546,046.68
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Solution
The fourth proportional to 19,890,987.84, 27,447,107.76 and 12,546,046.68 is: 17,311,995.66
Step by Step Solution
- Step 1: Write the proportion equation
19,890,987.84 : 27,447,107.76 = 12,546,046.68 : x - Step 2: Convert to fraction form
19,890,987.84/27,447,107.76 = 12,546,046.68/x - Step 3: Cross multiply
19,890,987.84x = 27,447,107.76 × 12,546,046.68 - Step 4: Simplify right side
19,890,987.84x = 344,352,695,187,950.25 - Step 5: Solve for x
x = 344,352,695,187,950.25/19,890,987.84 - Step 6: Final answer
x = 17,311,995.66
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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.