Finding the Fourth Proportional to 12,771,700.74, 19,147,378.79 and 7,374,228.66
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Solution
The fourth proportional to 12,771,700.74, 19,147,378.79 and 7,374,228.66 is: 11,055,469.61
Step by Step Solution
- Step 1: Write the proportion equation
12,771,700.74 : 19,147,378.79 = 7,374,228.66 : x - Step 2: Convert to fraction form
12,771,700.74/19,147,378.79 = 7,374,228.66/x - Step 3: Cross multiply
12,771,700.74x = 19,147,378.79 × 7,374,228.66 - Step 4: Simplify right side
12,771,700.74x = 141,197,149,437,094.12 - Step 5: Solve for x
x = 141,197,149,437,094.12/12,771,700.74 - Step 6: Final answer
x = 11,055,469.61
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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.