Finding the Fourth Proportional to 18,515,281.42, 27,773,014.47 and 7,591,437.78
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Solution
The fourth proportional to 18,515,281.42, 27,773,014.47 and 7,591,437.78 is: 11,387,194.53
Step by Step Solution
- Step 1: Write the proportion equation
18,515,281.42 : 27,773,014.47 = 7,591,437.78 : x - Step 2: Convert to fraction form
18,515,281.42/27,773,014.47 = 7,591,437.78/x - Step 3: Cross multiply
18,515,281.42x = 27,773,014.47 × 7,591,437.78 - Step 4: Simplify right side
18,515,281.42x = 210,837,111,312,044.69 - Step 5: Solve for x
x = 210,837,111,312,044.69/18,515,281.42 - Step 6: Final answer
x = 11,387,194.53
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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.