Finding the Fourth Proportional to 13,400,417.79, 18,494,218.28 and 7,893,508.05
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Solution
The fourth proportional to 13,400,417.79, 18,494,218.28 and 7,893,508.05 is: 10,894,008.17
Step by Step Solution
- Step 1: Write the proportion equation
13,400,417.79 : 18,494,218.28 = 7,893,508.05 : x - Step 2: Convert to fraction form
13,400,417.79/18,494,218.28 = 7,893,508.05/x - Step 3: Cross multiply
13,400,417.79x = 18,494,218.28 × 7,893,508.05 - Step 4: Simplify right side
13,400,417.79x = 145,984,260,891,370.91 - Step 5: Solve for x
x = 145,984,260,891,370.91/13,400,417.79 - Step 6: Final answer
x = 10,894,008.17
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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.