Finding the Fourth Proportional to 13,118,416.63, 18,103,294.87 and 7,238,104.99
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Solution
The fourth proportional to 13,118,416.63, 18,103,294.87 and 7,238,104.99 is: 9,988,518.63
Step by Step Solution
- Step 1: Write the proportion equation
13,118,416.63 : 18,103,294.87 = 7,238,104.99 : x - Step 2: Convert to fraction form
13,118,416.63/18,103,294.87 = 7,238,104.99/x - Step 3: Cross multiply
13,118,416.63x = 18,103,294.87 × 7,238,104.99 - Step 4: Simplify right side
13,118,416.63x = 131,033,548,870,634.89 - Step 5: Solve for x
x = 131,033,548,870,634.89/13,118,416.63 - Step 6: Final answer
x = 9,988,518.63
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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.