Finding the Fourth Proportional to 14,489,782.18, 19,996,378.78 and 7,963,642.96
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Solution
The fourth proportional to 14,489,782.18, 19,996,378.78 and 7,963,642.96 is: 10,990,090.75
Step by Step Solution
- Step 1: Write the proportion equation
14,489,782.18 : 19,996,378.78 = 7,963,642.96 : x - Step 2: Convert to fraction form
14,489,782.18/19,996,378.78 = 7,963,642.96/x - Step 3: Cross multiply
14,489,782.18x = 19,996,378.78 × 7,963,642.96 - Step 4: Simplify right side
14,489,782.18x = 159,244,021,096,840.41 - Step 5: Solve for x
x = 159,244,021,096,840.41/14,489,782.18 - Step 6: Final answer
x = 10,990,090.75
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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.