Finding the Fourth Proportional to 10,258,631.80, 15,387,947.70 and 9,786,239.80
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Solution
The fourth proportional to 10,258,631.80, 15,387,947.70 and 9,786,239.80 is: 14,679,359.70
Step by Step Solution
- Step 1: Write the proportion equation
10,258,631.80 : 15,387,947.70 = 9,786,239.80 : x - Step 2: Convert to fraction form
10,258,631.80/15,387,947.70 = 9,786,239.80/x - Step 3: Cross multiply
10,258,631.80x = 15,387,947.70 × 9,786,239.80 - Step 4: Simplify right side
10,258,631.80x = 150,590,146,222,058.47 - Step 5: Solve for x
x = 150,590,146,222,058.47/10,258,631.80 - Step 6: Final answer
x = 14,679,359.70
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1.5x scale
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.