Finding the Fourth Proportional to 28,242,663.12, 38,928,297.96 and 19,972,057.68
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Solution
The fourth proportional to 28,242,663.12, 38,928,297.96 and 19,972,057.68 is: 27,528,502.14
Step by Step Solution
- Step 1: Write the proportion equation
28,242,663.12 : 38,928,297.96 = 19,972,057.68 : x - Step 2: Convert to fraction form
28,242,663.12/38,928,297.96 = 19,972,057.68/x - Step 3: Cross multiply
28,242,663.12x = 38,928,297.96 × 19,972,057.68 - Step 4: Simplify right side
28,242,663.12x = 777,478,212,241,346.38 - Step 5: Solve for x
x = 777,478,212,241,346.38/28,242,663.12 - Step 6: Final answer
x = 27,528,502.14
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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.