Finding the Fourth Proportional to 21,332,289.86, 29,433,440.36 and 12,959,492.18
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Solution
The fourth proportional to 21,332,289.86, 29,433,440.36 and 12,959,492.18 is: 17,880,988.99
Step by Step Solution
- Step 1: Write the proportion equation
21,332,289.86 : 29,433,440.36 = 12,959,492.18 : x - Step 2: Convert to fraction form
21,332,289.86/29,433,440.36 = 12,959,492.18/x - Step 3: Cross multiply
21,332,289.86x = 29,433,440.36 × 12,959,492.18 - Step 4: Simplify right side
21,332,289.86x = 381,442,439,963,951.75 - Step 5: Solve for x
x = 381,442,439,963,951.75/21,332,289.86 - Step 6: Final answer
x = 17,880,988.99
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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.