Finding the Fourth Proportional to 28,197,764.42, 42,287,887.29 and 13,615,617.62
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Solution
The fourth proportional to 28,197,764.42, 42,287,887.29 and 13,615,617.62 is: 20,419,196.88
Step by Step Solution
- Step 1: Write the proportion equation
28,197,764.42 : 42,287,887.29 = 13,615,617.62 : x - Step 2: Convert to fraction form
28,197,764.42/42,287,887.29 = 13,615,617.62/x - Step 3: Cross multiply
28,197,764.42x = 42,287,887.29 × 13,615,617.62 - Step 4: Simplify right side
28,197,764.42x = 575,775,703,217,207 - Step 5: Solve for x
x = 575,775,703,217,207/28,197,764.42 - Step 6: Final answer
x = 20,419,196.88
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.