Finding the Fourth Proportional to 28,274,133.17, 39,018,832.58 and 15,716,366.42
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Solution
The fourth proportional to 28,274,133.17, 39,018,832.58 and 15,716,366.42 is: 21,688,879.59
Step by Step Solution
- Step 1: Write the proportion equation
28,274,133.17 : 39,018,832.58 = 15,716,366.42 : x - Step 2: Convert to fraction form
28,274,133.17/39,018,832.58 = 15,716,366.42/x - Step 3: Cross multiply
28,274,133.17x = 39,018,832.58 × 15,716,366.42 - Step 4: Simplify right side
28,274,133.17x = 613,234,269,952,110.75 - Step 5: Solve for x
x = 613,234,269,952,110.75/28,274,133.17 - Step 6: Final answer
x = 21,688,879.59
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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.