Finding the Fourth Proportional to 20,363,773.68, 28,100,967.12 and 11,194,644.96
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Solution
The fourth proportional to 20,363,773.68, 28,100,967.12 and 11,194,644.96 is: 15,448,038.02
Step by Step Solution
- Step 1: Write the proportion equation
20,363,773.68 : 28,100,967.12 = 11,194,644.96 : x - Step 2: Convert to fraction form
20,363,773.68/28,100,967.12 = 11,194,644.96/x - Step 3: Cross multiply
20,363,773.68x = 28,100,967.12 × 11,194,644.96 - Step 4: Simplify right side
20,363,773.68x = 314,580,349,941,033.75 - Step 5: Solve for x
x = 314,580,349,941,033.75/20,363,773.68 - Step 6: Final answer
x = 15,448,038.02
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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.