Finding the Fourth Proportional to 21,492,838.40, 32,239,257.60 and 21,293,772.80
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Solution
The fourth proportional to 21,492,838.40, 32,239,257.60 and 21,293,772.80 is: 31,940,659.20
Step by Step Solution
- Step 1: Write the proportion equation
21,492,838.40 : 32,239,257.60 = 21,293,772.80 : x - Step 2: Convert to fraction form
21,492,838.40/32,239,257.60 = 21,293,772.80/x - Step 3: Cross multiply
21,492,838.40x = 32,239,257.60 × 21,293,772.80 - Step 4: Simplify right side
21,492,838.40x = 686,495,426,575,073.38 - Step 5: Solve for x
x = 686,495,426,575,073.38/21,492,838.40 - Step 6: Final answer
x = 31,940,659.20
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.