Finding the Fourth Proportional to 21,555,259.67, 29,741,817.84 and 12,386,130.95
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Solution
The fourth proportional to 21,555,259.67, 29,741,817.84 and 12,386,130.95 is: 17,090,309.10
Step by Step Solution
- Step 1: Write the proportion equation
21,555,259.67 : 29,741,817.84 = 12,386,130.95 : x - Step 2: Convert to fraction form
21,555,259.67/29,741,817.84 = 12,386,130.95/x - Step 3: Cross multiply
21,555,259.67x = 29,741,817.84 × 12,386,130.95 - Step 4: Simplify right side
21,555,259.67x = 368,386,050,308,577.06 - Step 5: Solve for x
x = 368,386,050,308,577.06/21,555,259.67 - Step 6: Final answer
x = 17,090,309.10
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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.