Finding the Fourth Proportional to 11,908,690.94, 16,427,936.81 and 7,781,136.68
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Solution
The fourth proportional to 11,908,690.94, 16,427,936.81 and 7,781,136.68 is: 10,734,011.17
Step by Step Solution
- Step 1: Write the proportion equation
11,908,690.94 : 16,427,936.81 = 7,781,136.68 : x - Step 2: Convert to fraction form
11,908,690.94/16,427,936.81 = 7,781,136.68/x - Step 3: Cross multiply
11,908,690.94x = 16,427,936.81 × 7,781,136.68 - Step 4: Simplify right side
11,908,690.94x = 127,828,021,567,967.81 - Step 5: Solve for x
x = 127,828,021,567,967.81/11,908,690.94 - Step 6: Final answer
x = 10,734,011.17
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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.