Finding the Fourth Proportional to 19,155,757.42, 26,413,408.83 and 15,660,289.90
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Solution
The fourth proportional to 19,155,757.42, 26,413,408.83 and 15,660,289.90 is: 21,593,593.53
Step by Step Solution
- Step 1: Write the proportion equation
19,155,757.42 : 26,413,408.83 = 15,660,289.90 : x - Step 2: Convert to fraction form
19,155,757.42/26,413,408.83 = 15,660,289.90/x - Step 3: Cross multiply
19,155,757.42x = 26,413,408.83 × 15,660,289.90 - Step 4: Simplify right side
19,155,757.42x = 413,641,639,525,019.81 - Step 5: Solve for x
x = 413,641,639,525,019.81/19,155,757.42 - Step 6: Final answer
x = 21,593,593.53
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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.