Finding the Fourth Proportional to 13,513,709.44, 18,643,729.92 and 7,712,813.44
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Solution
The fourth proportional to 13,513,709.44, 18,643,729.92 and 7,712,813.44 is: 10,640,720.92
Step by Step Solution
- Step 1: Write the proportion equation
13,513,709.44 : 18,643,729.92 = 7,712,813.44 : x - Step 2: Convert to fraction form
13,513,709.44/18,643,729.92 = 7,712,813.44/x - Step 3: Cross multiply
13,513,709.44x = 18,643,729.92 × 7,712,813.44 - Step 4: Simplify right side
13,513,709.44x = 143,795,610,698,706.16 - Step 5: Solve for x
x = 143,795,610,698,706.16/13,513,709.44 - Step 6: Final answer
x = 10,640,720.92
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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.