Finding the Fourth Proportional to 15,316,412.82, 21,136,649.36 and 8,440,894.88
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Solution
The fourth proportional to 15,316,412.82, 21,136,649.36 and 8,440,894.88 is: 11,648,434.75
Step by Step Solution
- Step 1: Write the proportion equation
15,316,412.82 : 21,136,649.36 = 8,440,894.88 : x - Step 2: Convert to fraction form
15,316,412.82/21,136,649.36 = 8,440,894.88/x - Step 3: Cross multiply
15,316,412.82x = 21,136,649.36 × 8,440,894.88 - Step 4: Simplify right side
15,316,412.82x = 178,412,235,363,179.28 - Step 5: Solve for x
x = 178,412,235,363,179.28/15,316,412.82 - Step 6: Final answer
x = 11,648,434.75
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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.