Finding the Fourth Proportional to 14,397,486.21, 19,868,601.19 and 7,871,115.98
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Solution
The fourth proportional to 14,397,486.21, 19,868,601.19 and 7,871,115.98 is: 10,862,178.44
Step by Step Solution
- Step 1: Write the proportion equation
14,397,486.21 : 19,868,601.19 = 7,871,115.98 : x - Step 2: Convert to fraction form
14,397,486.21/19,868,601.19 = 7,871,115.98/x - Step 3: Cross multiply
14,397,486.21x = 19,868,601.19 × 7,871,115.98 - Step 4: Simplify right side
14,397,486.21x = 156,388,064,326,856.03 - Step 5: Solve for x
x = 156,388,064,326,856.03/14,397,486.21 - Step 6: Final answer
x = 10,862,178.44
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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.