Finding the Fourth Proportional to 19,688,969.31, 27,170,778.36 and 10,868,422.88
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Solution
The fourth proportional to 19,688,969.31, 27,170,778.36 and 10,868,422.88 is: 14,998,423.96
Step by Step Solution
- Step 1: Write the proportion equation
19,688,969.31 : 27,170,778.36 = 10,868,422.88 : x - Step 2: Convert to fraction form
19,688,969.31/27,170,778.36 = 10,868,422.88/x - Step 3: Cross multiply
19,688,969.31x = 27,170,778.36 × 10,868,422.88 - Step 4: Simplify right side
19,688,969.31x = 295,303,509,059,379 - Step 5: Solve for x
x = 295,303,509,059,379/19,688,969.31 - Step 6: Final answer
x = 14,998,423.96
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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.