Finding the Fourth Proportional to 13,603,990.12, 18,772,117.14 and 8,376,168.04
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Solution
The fourth proportional to 13,603,990.12, 18,772,117.14 and 8,376,168.04 is: 11,558,256.53
Step by Step Solution
- Step 1: Write the proportion equation
13,603,990.12 : 18,772,117.14 = 8,376,168.04 : x - Step 2: Convert to fraction form
13,603,990.12/18,772,117.14 = 8,376,168.04/x - Step 3: Cross multiply
13,603,990.12x = 18,772,117.14 × 8,376,168.04 - Step 4: Simplify right side
13,603,990.12x = 157,238,407,631,204.22 - Step 5: Solve for x
x = 157,238,407,631,204.22/13,603,990.12 - Step 6: Final answer
x = 11,558,256.53
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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.