Finding the Fourth Proportional to 13,698,331.13, 18,898,435.19 and 7,818,291.68
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Solution
The fourth proportional to 13,698,331.13, 18,898,435.19 and 7,818,291.68 is: 10,786,239.37
Step by Step Solution
- Step 1: Write the proportion equation
13,698,331.13 : 18,898,435.19 = 7,818,291.68 : x - Step 2: Convert to fraction form
13,698,331.13/18,898,435.19 = 7,818,291.68/x - Step 3: Cross multiply
13,698,331.13x = 18,898,435.19 × 7,818,291.68 - Step 4: Simplify right side
13,698,331.13x = 147,753,478,477,412.56 - Step 5: Solve for x
x = 147,753,478,477,412.56/13,698,331.13 - Step 6: Final answer
x = 10,786,239.37
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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.