Finding the Fourth Proportional to 28,495,021.15, 39,323,162.81 and 15,442,279.99
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Solution
The fourth proportional to 28,495,021.15, 39,323,162.81 and 15,442,279.99 is: 21,310,364.60
Step by Step Solution
- Step 1: Write the proportion equation
28,495,021.15 : 39,323,162.81 = 15,442,279.99 : x - Step 2: Convert to fraction form
28,495,021.15/39,323,162.81 = 15,442,279.99/x - Step 3: Cross multiply
28,495,021.15x = 39,323,162.81 × 15,442,279.99 - Step 4: Simplify right side
28,495,021.15x = 607,239,289,930,547.88 - Step 5: Solve for x
x = 607,239,289,930,547.88/28,495,021.15 - Step 6: Final answer
x = 21,310,364.60
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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.