Finding the Fourth Proportional to 20,406,844.04, 28,161,444.92 and 11,239,486.80
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Solution
The fourth proportional to 20,406,844.04, 28,161,444.92 and 11,239,486.80 is: 15,510,491.86
Step by Step Solution
- Step 1: Write the proportion equation
20,406,844.04 : 28,161,444.92 = 11,239,486.80 : x - Step 2: Convert to fraction form
20,406,844.04/28,161,444.92 = 11,239,486.80/x - Step 3: Cross multiply
20,406,844.04x = 28,161,444.92 × 11,239,486.80 - Step 4: Simplify right side
20,406,844.04x = 316,520,188,447,267.12 - Step 5: Solve for x
x = 316,520,188,447,267.12/20,406,844.04 - Step 6: Final answer
x = 15,510,491.86
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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.