Finding the Fourth Proportional to 19,578,272.40, 27,020,507.20 and 11,843,370.08
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Solution
The fourth proportional to 19,578,272.40, 27,020,507.20 and 11,843,370.08 is: 16,345,357.75
Step by Step Solution
- Step 1: Write the proportion equation
19,578,272.40 : 27,020,507.20 = 11,843,370.08 : x - Step 2: Convert to fraction form
19,578,272.40/27,020,507.20 = 11,843,370.08/x - Step 3: Cross multiply
19,578,272.40x = 27,020,507.20 × 11,843,370.08 - Step 4: Simplify right side
19,578,272.40x = 320,013,866,518,904.56 - Step 5: Solve for x
x = 320,013,866,518,904.56/19,578,272.40 - Step 6: Final answer
x = 16,345,357.75
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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.