Finding the Fourth Proportional to 28,143,160.26, 38,838,218.76 and 15,752,945.58
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Solution
The fourth proportional to 28,143,160.26, 38,838,218.76 and 15,752,945.58 is: 21,739,432.99
Step by Step Solution
- Step 1: Write the proportion equation
28,143,160.26 : 38,838,218.76 = 15,752,945.58 : x - Step 2: Convert to fraction form
28,143,160.26/38,838,218.76 = 15,752,945.58/x - Step 3: Cross multiply
28,143,160.26x = 38,838,218.76 × 15,752,945.58 - Step 4: Simplify right side
28,143,160.26x = 611,816,346,550,415 - Step 5: Solve for x
x = 611,816,346,550,415/28,143,160.26 - Step 6: Final answer
x = 21,739,432.99
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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.