Finding the Fourth Proportional to 28,791,658.24, 39,732,482.56 and 15,738,971.84
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Solution
The fourth proportional to 28,791,658.24, 39,732,482.56 and 15,738,971.84 is: 21,719,777.96
Step by Step Solution
- Step 1: Write the proportion equation
28,791,658.24 : 39,732,482.56 = 15,738,971.84 : x - Step 2: Convert to fraction form
28,791,658.24/39,732,482.56 = 15,738,971.84/x - Step 3: Cross multiply
28,791,658.24x = 39,732,482.56 × 15,738,971.84 - Step 4: Simplify right side
28,791,658.24x = 625,348,424,145,131.12 - Step 5: Solve for x
x = 625,348,424,145,131.12/28,791,658.24 - Step 6: Final answer
x = 21,719,777.96
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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.