Finding the Fourth Proportional to 28,564,877.91, 39,419,539.20 and 15,512,133.36
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Solution
The fourth proportional to 28,564,877.91, 39,419,539.20 and 15,512,133.36 is: 21,406,748.21
Step by Step Solution
- Step 1: Write the proportion equation
28,564,877.91 : 39,419,539.20 = 15,512,133.36 : x - Step 2: Convert to fraction form
28,564,877.91/39,419,539.20 = 15,512,133.36/x - Step 3: Cross multiply
28,564,877.91x = 39,419,539.20 × 15,512,133.36 - Step 4: Simplify right side
28,564,877.91x = 611,481,149,060,147.75 - Step 5: Solve for x
x = 611,481,149,060,147.75/28,564,877.91 - Step 6: Final answer
x = 21,406,748.21
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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.