Finding the Fourth Proportional to 15,679,411.56, 21,638,202.62 and 10,728,237.80
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Solution
The fourth proportional to 15,679,411.56, 21,638,202.62 and 10,728,237.80 is: 14,805,388.73
Step by Step Solution
- Step 1: Write the proportion equation
15,679,411.56 : 21,638,202.62 = 10,728,237.80 : x - Step 2: Convert to fraction form
15,679,411.56/21,638,202.62 = 10,728,237.80/x - Step 3: Cross multiply
15,679,411.56x = 21,638,202.62 × 10,728,237.80 - Step 4: Simplify right side
15,679,411.56x = 232,139,783,271,943.06 - Step 5: Solve for x
x = 232,139,783,271,943.06/15,679,411.56 - Step 6: Final answer
x = 14,805,388.73
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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.