Finding the Fourth Proportional to 12,842,721.20, 19,261,133.84 and 7,656,798.08
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Solution
The fourth proportional to 12,842,721.20, 19,261,133.84 and 7,656,798.08 is: 11,483,439.55
Step by Step Solution
- Step 1: Write the proportion equation
12,842,721.20 : 19,261,133.84 = 7,656,798.08 : x - Step 2: Convert to fraction form
12,842,721.20/19,261,133.84 = 7,656,798.08/x - Step 3: Cross multiply
12,842,721.20x = 19,261,133.84 × 7,656,798.08 - Step 4: Simplify right side
12,842,721.20x = 147,478,612,604,735.03 - Step 5: Solve for x
x = 147,478,612,604,735.03/12,842,721.20 - Step 6: Final answer
x = 11,483,439.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.