Finding the Fourth Proportional to 15,188,655.66, 20,960,344.80 and 8,313,137.70
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Solution
The fourth proportional to 15,188,655.66, 20,960,344.80 and 8,313,137.70 is: 11,472,130.02
Step by Step Solution
- Step 1: Write the proportion equation
15,188,655.66 : 20,960,344.80 = 8,313,137.70 : x - Step 2: Convert to fraction form
15,188,655.66/20,960,344.80 = 8,313,137.70/x - Step 3: Cross multiply
15,188,655.66x = 20,960,344.80 × 8,313,137.70 - Step 4: Simplify right side
15,188,655.66x = 174,246,232,561,878.97 - Step 5: Solve for x
x = 174,246,232,561,878.97/15,188,655.66 - Step 6: Final answer
x = 11,472,130.02
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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.