Finding the Fourth Proportional to 15,447,420.77, 21,318,437.12 and 8,571,902.84
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Solution
The fourth proportional to 15,447,420.77, 21,318,437.12 and 8,571,902.84 is: 11,829,778.86
Step by Step Solution
- Step 1: Write the proportion equation
15,447,420.77 : 21,318,437.12 = 8,571,902.84 : x - Step 2: Convert to fraction form
15,447,420.77/21,318,437.12 = 8,571,902.84/x - Step 3: Cross multiply
15,447,420.77x = 21,318,437.12 × 8,571,902.84 - Step 4: Simplify right side
15,447,420.77x = 182,739,571,693,289.44 - Step 5: Solve for x
x = 182,739,571,693,289.44/15,447,420.77 - Step 6: Final answer
x = 11,829,778.86
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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.