Finding the Fourth Proportional to 19,875,768.53, 27,428,395.57 and 11,173,979.84
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Solution
The fourth proportional to 19,875,768.53, 27,428,395.57 and 11,173,979.84 is: 15,419,999.41
Step by Step Solution
- Step 1: Write the proportion equation
19,875,768.53 : 27,428,395.57 = 11,173,979.84 : x - Step 2: Convert to fraction form
19,875,768.53/27,428,395.57 = 11,173,979.84/x - Step 3: Cross multiply
19,875,768.53x = 27,428,395.57 × 11,173,979.84 - Step 4: Simplify right side
19,875,768.53x = 306,484,338,977,648.38 - Step 5: Solve for x
x = 306,484,338,977,648.38/19,875,768.53 - Step 6: Final answer
x = 15,419,999.41
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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.