Finding the Fourth Proportional to 13,015,478.64, 17,961,329.56 and 7,135,102.48
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Solution
The fourth proportional to 13,015,478.64, 17,961,329.56 and 7,135,102.48 is: 9,846,424.45
Step by Step Solution
- Step 1: Write the proportion equation
13,015,478.64 : 17,961,329.56 = 7,135,102.48 : x - Step 2: Convert to fraction form
13,015,478.64/17,961,329.56 = 7,135,102.48/x - Step 3: Cross multiply
13,015,478.64x = 17,961,329.56 × 7,135,102.48 - Step 4: Simplify right side
13,015,478.64x = 128,155,927,087,653.31 - Step 5: Solve for x
x = 128,155,927,087,653.31/13,015,478.64 - Step 6: Final answer
x = 9,846,424.45
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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.