Finding the Fourth Proportional to 20,722,531.80, 31,083,797.70 and 15,683,683.80
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Solution
The fourth proportional to 20,722,531.80, 31,083,797.70 and 15,683,683.80 is: 23,525,525.70
Step by Step Solution
- Step 1: Write the proportion equation
20,722,531.80 : 31,083,797.70 = 15,683,683.80 : x - Step 2: Convert to fraction form
20,722,531.80/31,083,797.70 = 15,683,683.80/x - Step 3: Cross multiply
20,722,531.80x = 31,083,797.70 × 15,683,683.80 - Step 4: Simplify right side
20,722,531.80x = 487,508,454,429,967.25 - Step 5: Solve for x
x = 487,508,454,429,967.25/20,722,531.80 - Step 6: Final answer
x = 23,525,525.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.