Finding the Fourth Proportional to 20,609,600.49, 28,440,138.35 and 11,441,652.75
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Solution
The fourth proportional to 20,609,600.49, 28,440,138.35 and 11,441,652.75 is: 15,788,864.38
Step by Step Solution
- Step 1: Write the proportion equation
20,609,600.49 : 28,440,138.35 = 11,441,652.75 : x - Step 2: Convert to fraction form
20,609,600.49/28,440,138.35 = 11,441,652.75/x - Step 3: Cross multiply
20,609,600.49x = 28,440,138.35 × 11,441,652.75 - Step 4: Simplify right side
20,609,600.49x = 325,402,187,105,449.69 - Step 5: Solve for x
x = 325,402,187,105,449.69/20,609,600.49 - Step 6: Final answer
x = 15,788,864.38
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1.5x scale
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.