Finding the Fourth Proportional to 28,416,678.19, 39,214,982.52 and 15,363,906.12
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Solution
The fourth proportional to 28,416,678.19, 39,214,982.52 and 15,363,906.12 is: 21,202,172.40
Step by Step Solution
- Step 1: Write the proportion equation
28,416,678.19 : 39,214,982.52 = 15,363,906.12 : x - Step 2: Convert to fraction form
28,416,678.19/39,214,982.52 = 15,363,906.12/x - Step 3: Cross multiply
28,416,678.19x = 39,214,982.52 × 15,363,906.12 - Step 4: Simplify right side
28,416,678.19x = 602,495,309,934,721 - Step 5: Solve for x
x = 602,495,309,934,721/28,416,678.19 - Step 6: Final answer
x = 21,202,172.40
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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.