Finding the Fourth Proportional to 15,888,943.84, 21,948,877.92 and 15,299,043.52
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Solution
The fourth proportional to 15,888,943.84, 21,948,877.92 and 15,299,043.52 is: 21,133,993.67
Step by Step Solution
- Step 1: Write the proportion equation
15,888,943.84 : 21,948,877.92 = 15,299,043.52 : x - Step 2: Convert to fraction form
15,888,943.84/21,948,877.92 = 15,299,043.52/x - Step 3: Cross multiply
15,888,943.84x = 21,948,877.92 × 15,299,043.52 - Step 4: Simplify right side
15,888,943.84x = 335,796,838,513,247.12 - Step 5: Solve for x
x = 335,796,838,513,247.12/15,888,943.84 - Step 6: Final answer
x = 21,133,993.67
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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.