Finding the Fourth Proportional to 20,646,781.58, 28,493,289.70 and 11,355,070.84
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Solution
The fourth proportional to 20,646,781.58, 28,493,289.70 and 11,355,070.84 is: 15,670,399.84
Step by Step Solution
- Step 1: Write the proportion equation
20,646,781.58 : 28,493,289.70 = 11,355,070.84 : x - Step 2: Convert to fraction form
20,646,781.58/28,493,289.70 = 11,355,070.84/x - Step 3: Cross multiply
20,646,781.58x = 28,493,289.70 × 11,355,070.84 - Step 4: Simplify right side
20,646,781.58x = 323,543,322,908,521.50 - Step 5: Solve for x
x = 323,543,322,908,521.50/20,646,781.58 - Step 6: Final answer
x = 15,670,399.84
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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.