Finding the Fourth Proportional to 20,927,220.09, 28,879,575.66 and 12,107,909.31
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Solution
The fourth proportional to 20,927,220.09, 28,879,575.66 and 12,107,909.31 is: 16,708,921.75
Step by Step Solution
- Step 1: Write the proportion equation
20,927,220.09 : 28,879,575.66 = 12,107,909.31 : x - Step 2: Convert to fraction form
20,927,220.09/28,879,575.66 = 12,107,909.31/x - Step 3: Cross multiply
20,927,220.09x = 28,879,575.66 × 12,107,909.31 - Step 4: Simplify right side
20,927,220.09x = 349,671,283,002,563.44 - Step 5: Solve for x
x = 349,671,283,002,563.44/20,927,220.09 - Step 6: Final answer
x = 16,708,921.75
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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.