Finding the Fourth Proportional to 13,117,868.16, 18,102,720.95 and 7,237,502.05
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Solution
The fourth proportional to 13,117,868.16, 18,102,720.95 and 7,237,502.05 is: 9,987,787.53
Step by Step Solution
- Step 1: Write the proportion equation
13,117,868.16 : 18,102,720.95 = 7,237,502.05 : x - Step 2: Convert to fraction form
13,117,868.16/18,102,720.95 = 7,237,502.05/x - Step 3: Cross multiply
13,117,868.16x = 18,102,720.95 × 7,237,502.05 - Step 4: Simplify right side
13,117,868.16x = 131,018,479,950,015.44 - Step 5: Solve for x
x = 131,018,479,950,015.44/13,117,868.16 - Step 6: Final answer
x = 9,987,787.53
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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.