Finding the Fourth Proportional to 15,259,539.12, 21,076,793.64 and 11,409,136.08
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Solution
The fourth proportional to 15,259,539.12, 21,076,793.64 and 11,409,136.08 is: 15,758,536.67
Step by Step Solution
- Step 1: Write the proportion equation
15,259,539.12 : 21,076,793.64 = 11,409,136.08 : x - Step 2: Convert to fraction form
15,259,539.12/21,076,793.64 = 11,409,136.08/x - Step 3: Cross multiply
15,259,539.12x = 21,076,793.64 × 11,409,136.08 - Step 4: Simplify right side
15,259,539.12x = 240,468,006,768,838.53 - Step 5: Solve for x
x = 240,468,006,768,838.53/15,259,539.12 - Step 6: Final answer
x = 15,758,536.67
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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.