Finding the Fourth Proportional to 28,459,470.26, 39,274,082.34 and 15,406,729.32
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Solution
The fourth proportional to 28,459,470.26, 39,274,082.34 and 15,406,729.32 is: 21,261,293.71
Step by Step Solution
- Step 1: Write the proportion equation
28,459,470.26 : 39,274,082.34 = 15,406,729.32 : x - Step 2: Convert to fraction form
28,459,470.26/39,274,082.34 = 15,406,729.32/x - Step 3: Cross multiply
28,459,470.26x = 39,274,082.34 × 15,406,729.32 - Step 4: Simplify right side
28,459,470.26x = 605,085,155,903,772.25 - Step 5: Solve for x
x = 605,085,155,903,772.25/28,459,470.26 - Step 6: Final answer
x = 21,261,293.71
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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.