Finding the Fourth Proportional to 13,477,274.18, 18,607,615.90 and 7,972,417.49
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Solution
The fourth proportional to 13,477,274.18, 18,607,615.90 and 7,972,417.49 is: 11,007,246.75
Step by Step Solution
- Step 1: Write the proportion equation
13,477,274.18 : 18,607,615.90 = 7,972,417.49 : x - Step 2: Convert to fraction form
13,477,274.18/18,607,615.90 = 7,972,417.49/x - Step 3: Cross multiply
13,477,274.18x = 18,607,615.90 × 7,972,417.49 - Step 4: Simplify right side
13,477,274.18x = 148,347,682,474,950.09 - Step 5: Solve for x
x = 148,347,682,474,950.09/13,477,274.18 - Step 6: Final answer
x = 11,007,246.75
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1.5x scale
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.