Finding the Fourth Proportional to 21,317,410.71, 29,421,338.00 and 13,996,481.67
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Solution
The fourth proportional to 21,317,410.71, 29,421,338.00 and 13,996,481.67 is: 19,317,318.77
Step by Step Solution
- Step 1: Write the proportion equation
21,317,410.71 : 29,421,338.00 = 13,996,481.67 : x - Step 2: Convert to fraction form
21,317,410.71/29,421,338.00 = 13,996,481.67/x - Step 3: Cross multiply
21,317,410.71x = 29,421,338.00 × 13,996,481.67 - Step 4: Simplify right side
21,317,410.71x = 411,795,217,953,892.06 - Step 5: Solve for x
x = 411,795,217,953,892.06/21,317,410.71 - Step 6: Final answer
x = 19,317,318.77
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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.