Finding the Fourth Proportional to 13,122,246.12, 18,109,224.56 and 7,321,534.80
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Solution
The fourth proportional to 13,122,246.12, 18,109,224.56 and 7,321,534.80 is: 10,104,010.90
Step by Step Solution
- Step 1: Write the proportion equation
13,122,246.12 : 18,109,224.56 = 7,321,534.80 : x - Step 2: Convert to fraction form
13,122,246.12/18,109,224.56 = 7,321,534.80/x - Step 3: Cross multiply
13,122,246.12x = 18,109,224.56 × 7,321,534.80 - Step 4: Simplify right side
13,122,246.12x = 132,587,317,817,054.67 - Step 5: Solve for x
x = 132,587,317,817,054.67/13,122,246.12 - Step 6: Final answer
x = 10,104,010.90
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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.