Finding the Fourth Proportional to 11,871,419.55, 16,382,551.75 and 6,438,911.55
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Solution
The fourth proportional to 11,871,419.55, 16,382,551.75 and 6,438,911.55 is: 8,885,694.02
Step by Step Solution
- Step 1: Write the proportion equation
11,871,419.55 : 16,382,551.75 = 6,438,911.55 : x - Step 2: Convert to fraction form
11,871,419.55/16,382,551.75 = 6,438,911.55/x - Step 3: Cross multiply
11,871,419.55x = 16,382,551.75 × 6,438,911.55 - Step 4: Simplify right side
11,871,419.55x = 105,485,801,681,547.70 - Step 5: Solve for x
x = 105,485,801,681,547.70/11,871,419.55 - Step 6: Final answer
x = 8,885,694.02
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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.