Finding the Fourth Proportional to 15,862,128, 21,889,869.44 and 8,618,784
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Solution
The fourth proportional to 15,862,128, 21,889,869.44 and 8,618,784 is: 11,893,994.08
Step by Step Solution
- Step 1: Write the proportion equation
15,862,128 : 21,889,869.44 = 8,618,784 : x - Step 2: Convert to fraction form
15,862,128/21,889,869.44 = 8,618,784/x - Step 3: Cross multiply
15,862,128x = 21,889,869.44 × 8,618,784 - Step 4: Simplify right side
15,862,128x = 188,664,056,491,560.97 - Step 5: Solve for x
x = 188,664,056,491,560.97/15,862,128 - Step 6: Final answer
x = 11,893,994.08
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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.