Finding the Fourth Proportional to 20,334,764.99, 28,061,873.70 and 11,042,252.05
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Solution
The fourth proportional to 20,334,764.99, 28,061,873.70 and 11,042,252.05 is: 15,238,252.45
Step by Step Solution
- Step 1: Write the proportion equation
20,334,764.99 : 28,061,873.70 = 11,042,252.05 : x - Step 2: Convert to fraction form
20,334,764.99/28,061,873.70 = 11,042,252.05/x - Step 3: Cross multiply
20,334,764.99x = 28,061,873.70 × 11,042,252.05 - Step 4: Simplify right side
20,334,764.99x = 309,866,282,467,151.88 - Step 5: Solve for x
x = 309,866,282,467,151.88/20,334,764.99 - Step 6: Final answer
x = 15,238,252.45
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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.