Finding the Fourth Proportional to 13,291,640.01, 18,345,875.76 and 8,656,973.91
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Solution
The fourth proportional to 13,291,640.01, 18,345,875.76 and 8,656,973.91 is: 11,948,846.62
Step by Step Solution
- Step 1: Write the proportion equation
13,291,640.01 : 18,345,875.76 = 8,656,973.91 : x - Step 2: Convert to fraction form
13,291,640.01/18,345,875.76 = 8,656,973.91/x - Step 3: Cross multiply
13,291,640.01x = 18,345,875.76 × 8,656,973.91 - Step 4: Simplify right side
13,291,640.01x = 158,819,767,810,421.44 - Step 5: Solve for x
x = 158,819,767,810,421.44/13,291,640.01 - Step 6: Final answer
x = 11,948,846.62
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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.