Finding the Fourth Proportional to 19,977.24, 29,972.74 and 8,891.70
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Solution
The fourth proportional to 19,977.24, 29,972.74 and 8,891.70 is: 13,340.61
Step by Step Solution
- Step 1: Write the proportion equation
19,977.24 : 29,972.74 = 8,891.70 : x - Step 2: Convert to fraction form
19,977.24/29,972.74 = 8,891.70/x - Step 3: Cross multiply
19,977.24x = 29,972.74 × 8,891.70 - Step 4: Simplify right side
19,977.24x = 266,508,612.26 - Step 5: Solve for x
x = 266,508,612.26/19,977.24 - Step 6: Final answer
x = 13,340.61
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.