Finding the Fourth Proportional to 28,155,994.68, 38,855,272.66 and 15,278,938.68
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Solution
The fourth proportional to 28,155,994.68, 38,855,272.66 and 15,278,938.68 is: 21,084,935.38
Step by Step Solution
- Step 1: Write the proportion equation
28,155,994.68 : 38,855,272.66 = 15,278,938.68 : x - Step 2: Convert to fraction form
28,155,994.68/38,855,272.66 = 15,278,938.68/x - Step 3: Cross multiply
28,155,994.68x = 38,855,272.66 × 15,278,938.68 - Step 4: Simplify right side
28,155,994.68x = 593,667,328,366,820.38 - Step 5: Solve for x
x = 593,667,328,366,820.38/28,155,994.68 - Step 6: Final answer
x = 21,084,935.38
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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.