Finding the Fourth Proportional to 12,989,984.96, 19,489,306.16 and 4,354,939.07
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Solution
The fourth proportional to 12,989,984.96, 19,489,306.16 and 4,354,939.07 is: 6,533,859.82
Step by Step Solution
- Step 1: Write the proportion equation
12,989,984.96 : 19,489,306.16 = 4,354,939.07 : x - Step 2: Convert to fraction form
12,989,984.96/19,489,306.16 = 4,354,939.07/x - Step 3: Cross multiply
12,989,984.96x = 19,489,306.16 × 4,354,939.07 - Step 4: Simplify right side
12,989,984.96x = 84,874,740,724,154.45 - Step 5: Solve for x
x = 84,874,740,724,154.45/12,989,984.96 - Step 6: Final answer
x = 6,533,859.82
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.