Finding the Fourth Proportional to 13,415,642.16, 18,515,259.12 and 7,616,301.36
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Solution
The fourth proportional to 13,415,642.16, 18,515,259.12 and 7,616,301.36 is: 10,511,445.63
Step by Step Solution
- Step 1: Write the proportion equation
13,415,642.16 : 18,515,259.12 = 7,616,301.36 : x - Step 2: Convert to fraction form
13,415,642.16/18,515,259.12 = 7,616,301.36/x - Step 3: Cross multiply
13,415,642.16x = 18,515,259.12 × 7,616,301.36 - Step 4: Simplify right side
13,415,642.16x = 141,017,793,216,408.41 - Step 5: Solve for x
x = 141,017,793,216,408.41/13,415,642.16 - Step 6: Final answer
x = 10,511,445.63
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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.