Finding the Fourth Proportional to 12,927,419.90, 17,839,960.68 and 7,126,409.18
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Solution
The fourth proportional to 12,927,419.90, 17,839,960.68 and 7,126,409.18 is: 9,834,511.49
Step by Step Solution
- Step 1: Write the proportion equation
12,927,419.90 : 17,839,960.68 = 7,126,409.18 : x - Step 2: Convert to fraction form
12,927,419.90/17,839,960.68 = 7,126,409.18/x - Step 3: Cross multiply
12,927,419.90x = 17,839,960.68 × 7,126,409.18 - Step 4: Simplify right side
12,927,419.90x = 127,134,859,471,591.23 - Step 5: Solve for x
x = 127,134,859,471,591.23/12,927,419.90 - Step 6: Final answer
x = 9,834,511.49
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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.