Finding the Fourth Proportional to 15,517,389.70, 21,414,662.09 and 8,641,871.77
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Solution
The fourth proportional to 15,517,389.70, 21,414,662.09 and 8,641,871.77 is: 11,926,153.00
Step by Step Solution
- Step 1: Write the proportion equation
15,517,389.70 : 21,414,662.09 = 8,641,871.77 : x - Step 2: Convert to fraction form
15,517,389.70/21,414,662.09 = 8,641,871.77/x - Step 3: Cross multiply
15,517,389.70x = 21,414,662.09 × 8,641,871.77 - Step 4: Simplify right side
15,517,389.70x = 185,062,763,748,307.44 - Step 5: Solve for x
x = 185,062,763,748,307.44/15,517,389.70 - Step 6: Final answer
x = 11,926,153.00
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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.