Finding the Fourth Proportional to 21,425,122.72, 29,575,717.12 and 14,465,228.56
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Solution
The fourth proportional to 21,425,122.72, 29,575,717.12 and 14,465,228.56 is: 19,968,124.04
Step by Step Solution
- Step 1: Write the proportion equation
21,425,122.72 : 29,575,717.12 = 14,465,228.56 : x - Step 2: Convert to fraction form
21,425,122.72/29,575,717.12 = 14,465,228.56/x - Step 3: Cross multiply
21,425,122.72x = 29,575,717.12 × 14,465,228.56 - Step 4: Simplify right side
21,425,122.72x = 427,819,507,966,705 - Step 5: Solve for x
x = 427,819,507,966,705/21,425,122.72 - Step 6: Final answer
x = 19,968,124.04
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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.