Finding the Fourth Proportional to 28,901,448.81, 39,884,546.61 and 15,847,929.18
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Solution
The fourth proportional to 28,901,448.81, 39,884,546.61 and 15,847,929.18 is: 21,870,442.35
Step by Step Solution
- Step 1: Write the proportion equation
28,901,448.81 : 39,884,546.61 = 15,847,929.18 : x - Step 2: Convert to fraction form
28,901,448.81/39,884,546.61 = 15,847,929.18/x - Step 3: Cross multiply
28,901,448.81x = 39,884,546.61 × 15,847,929.18 - Step 4: Simplify right side
28,901,448.81x = 632,087,470,051,689 - Step 5: Solve for x
x = 632,087,470,051,689/28,901,448.81 - Step 6: Final answer
x = 21,870,442.35
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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.