Finding the Fourth Proportional to 13,161,490.60, 19,729,794.30 and 7,774,277.80
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Solution
The fourth proportional to 13,161,490.60, 19,729,794.30 and 7,774,277.80 is: 11,654,067.65
Step by Step Solution
- Step 1: Write the proportion equation
13,161,490.60 : 19,729,794.30 = 7,774,277.80 : x - Step 2: Convert to fraction form
13,161,490.60/19,729,794.30 = 7,774,277.80/x - Step 3: Cross multiply
13,161,490.60x = 19,729,794.30 × 7,774,277.80 - Step 4: Simplify right side
13,161,490.60x = 153,384,901,825,056.53 - Step 5: Solve for x
x = 153,384,901,825,056.53/13,161,490.60 - Step 6: Final answer
x = 11,654,067.65
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.