Finding the Fourth Proportional to 13,509,977.81, 18,643,778.15 and 7,315,029.09
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Solution
The fourth proportional to 13,509,977.81, 18,643,778.15 and 7,315,029.09 is: 10,094,744.89
Step by Step Solution
- Step 1: Write the proportion equation
13,509,977.81 : 18,643,778.15 = 7,315,029.09 : x - Step 2: Convert to fraction form
13,509,977.81/18,643,778.15 = 7,315,029.09/x - Step 3: Cross multiply
13,509,977.81x = 18,643,778.15 × 7,315,029.09 - Step 4: Simplify right side
13,509,977.81x = 136,379,779,478,181.23 - Step 5: Solve for x
x = 136,379,779,478,181.23/13,509,977.81 - Step 6: Final answer
x = 10,094,744.89
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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.