Finding the Fourth Proportional to 21,078,366.24, 29,088,164.64 and 11,420,574.24
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Solution
The fourth proportional to 21,078,366.24, 29,088,164.64 and 11,420,574.24 is: 15,760,402.87
Step by Step Solution
- Step 1: Write the proportion equation
21,078,366.24 : 29,088,164.64 = 11,420,574.24 : x - Step 2: Convert to fraction form
21,078,366.24/29,088,164.64 = 11,420,574.24/x - Step 3: Cross multiply
21,078,366.24x = 29,088,164.64 × 11,420,574.24 - Step 4: Simplify right side
21,078,366.24x = 332,203,543,776,462.88 - Step 5: Solve for x
x = 332,203,543,776,462.88/21,078,366.24 - Step 6: Final answer
x = 15,760,402.87
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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.