Finding the Fourth Proportional to 20,476,911.01, 28,257,951.12 and 11,184,479.11
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Solution
The fourth proportional to 20,476,911.01, 28,257,951.12 and 11,184,479.11 is: 15,434,479.54
Step by Step Solution
- Step 1: Write the proportion equation
20,476,911.01 : 28,257,951.12 = 11,184,479.11 : x - Step 2: Convert to fraction form
20,476,911.01/28,257,951.12 = 11,184,479.11/x - Step 3: Cross multiply
20,476,911.01x = 28,257,951.12 × 11,184,479.11 - Step 4: Simplify right side
20,476,911.01x = 316,050,463,993,041.12 - Step 5: Solve for x
x = 316,050,463,993,041.12/20,476,911.01 - Step 6: Final answer
x = 15,434,479.54
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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.