Finding the Fourth Proportional to 28,791,843.36, 39,732,752.72 and 15,739,159.84
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Solution
The fourth proportional to 28,791,843.36, 39,732,752.72 and 15,739,159.84 is: 21,720,045.44
Step by Step Solution
- Step 1: Write the proportion equation
28,791,843.36 : 39,732,752.72 = 15,739,159.84 : x - Step 2: Convert to fraction form
28,791,843.36/39,732,752.72 = 15,739,159.84/x - Step 3: Cross multiply
28,791,843.36x = 39,732,752.72 × 15,739,159.84 - Step 4: Simplify right side
28,791,843.36x = 625,360,145,943,274.75 - Step 5: Solve for x
x = 625,360,145,943,274.75/28,791,843.36 - Step 6: Final answer
x = 21,720,045.44
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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.