Finding the Fourth Proportional to 15,109,518.16, 20,850,528.36 and 8,233,853.68
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Solution
The fourth proportional to 15,109,518.16, 20,850,528.36 and 8,233,853.68 is: 11,362,387.46
Step by Step Solution
- Step 1: Write the proportion equation
15,109,518.16 : 20,850,528.36 = 8,233,853.68 : x - Step 2: Convert to fraction form
15,109,518.16/20,850,528.36 = 8,233,853.68/x - Step 3: Cross multiply
15,109,518.16x = 20,850,528.36 × 8,233,853.68 - Step 4: Simplify right side
15,109,518.16x = 171,680,199,666,930.34 - Step 5: Solve for x
x = 171,680,199,666,930.34/15,109,518.16 - Step 6: Final answer
x = 11,362,387.46
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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.