Finding the Fourth Proportional to 28,420,090.71, 39,219,697.49 and 15,367,318.35
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Solution
The fourth proportional to 28,420,090.71, 39,219,697.49 and 15,367,318.35 is: 21,206,884.35
Step by Step Solution
- Step 1: Write the proportion equation
28,420,090.71 : 39,219,697.49 = 15,367,318.35 : x - Step 2: Convert to fraction form
28,420,090.71/39,219,697.49 = 15,367,318.35/x - Step 3: Cross multiply
28,420,090.71x = 39,219,697.49 × 15,367,318.35 - Step 4: Simplify right side
28,420,090.71x = 602,701,576,842,689.38 - Step 5: Solve for x
x = 602,701,576,842,689.38/28,420,090.71 - Step 6: Final answer
x = 21,206,884.35
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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.