Finding the Fourth Proportional to 28,446,663.76, 39,256,395.18 and 15,393,922.54
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Solution
The fourth proportional to 28,446,663.76, 39,256,395.18 and 15,393,922.54 is: 21,243,612.67
Step by Step Solution
- Step 1: Write the proportion equation
28,446,663.76 : 39,256,395.18 = 15,393,922.54 : x - Step 2: Convert to fraction form
28,446,663.76/39,256,395.18 = 15,393,922.54/x - Step 3: Cross multiply
28,446,663.76x = 39,256,395.18 × 15,393,922.54 - Step 4: Simplify right side
28,446,663.76x = 604,309,906,600,549.38 - Step 5: Solve for x
x = 604,309,906,600,549.38/28,446,663.76 - Step 6: Final answer
x = 21,243,612.67
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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.