Finding the Fourth Proportional to 21,399,775.04, 29,531,856.99 and 12,576,857.53
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Solution
The fourth proportional to 21,399,775.04, 29,531,856.99 and 12,576,857.53 is: 17,356,161.79
Step by Step Solution
- Step 1: Write the proportion equation
21,399,775.04 : 29,531,856.99 = 12,576,857.53 : x - Step 2: Convert to fraction form
21,399,775.04/29,531,856.99 = 12,576,857.53/x - Step 3: Cross multiply
21,399,775.04x = 29,531,856.99 × 12,576,857.53 - Step 4: Simplify right side
21,399,775.04x = 371,417,957,959,564.62 - Step 5: Solve for x
x = 371,417,957,959,564.62/21,399,775.04 - Step 6: Final answer
x = 17,356,161.79
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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.