Finding the Fourth Proportional to 21,411,581.85, 29,473,308.63 and 18,480,698.91
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Solution
The fourth proportional to 21,411,581.85, 29,473,308.63 and 18,480,698.91 is: 25,438,911.82
Step by Step Solution
- Step 1: Write the proportion equation
21,411,581.85 : 29,473,308.63 = 18,480,698.91 : x - Step 2: Convert to fraction form
21,411,581.85/29,473,308.63 = 18,480,698.91/x - Step 3: Cross multiply
21,411,581.85x = 29,473,308.63 × 18,480,698.91 - Step 4: Simplify right side
21,411,581.85x = 544,687,342,672,534.56 - Step 5: Solve for x
x = 544,687,342,672,534.56/21,411,581.85 - Step 6: Final answer
x = 25,438,911.82
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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.