Finding the Fourth Proportional to 28,155,974.63, 38,855,244.98 and 15,278,918.63
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Solution
The fourth proportional to 28,155,974.63, 38,855,244.98 and 15,278,918.63 is: 21,084,907.70
Step by Step Solution
- Step 1: Write the proportion equation
28,155,974.63 : 38,855,244.98 = 15,278,918.63 : x - Step 2: Convert to fraction form
28,155,974.63/38,855,244.98 = 15,278,918.63/x - Step 3: Cross multiply
28,155,974.63x = 38,855,244.98 × 15,278,918.63 - Step 4: Simplify right side
28,155,974.63x = 593,666,126,242,057.12 - Step 5: Solve for x
x = 593,666,126,242,057.12/28,155,974.63 - Step 6: Final answer
x = 21,084,907.70
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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.