Finding the Fourth Proportional to 15,347,202.96, 21,179,641.36 and 8,378,252.10
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Solution
The fourth proportional to 15,347,202.96, 21,179,641.36 and 8,378,252.10 is: 11,562,261.55
Step by Step Solution
- Step 1: Write the proportion equation
15,347,202.96 : 21,179,641.36 = 8,378,252.10 : x - Step 2: Convert to fraction form
15,347,202.96/21,179,641.36 = 8,378,252.10/x - Step 3: Cross multiply
15,347,202.96x = 21,179,641.36 × 8,378,252.10 - Step 4: Simplify right side
15,347,202.96x = 177,448,374,701,666.84 - Step 5: Solve for x
x = 177,448,374,701,666.84/15,347,202.96 - Step 6: Final answer
x = 11,562,261.55
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1.5x scale
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.