Finding the Fourth Proportional to 15,457,457.88, 21,330,304.74 and 8,581,938.12
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Solution
The fourth proportional to 15,457,457.88, 21,330,304.74 and 8,581,938.12 is: 11,842,526.55
Step by Step Solution
- Step 1: Write the proportion equation
15,457,457.88 : 21,330,304.74 = 8,581,938.12 : x - Step 2: Convert to fraction form
15,457,457.88/21,330,304.74 = 8,581,938.12/x - Step 3: Cross multiply
15,457,457.88x = 21,330,304.74 × 8,581,938.12 - Step 4: Simplify right side
15,457,457.88x = 183,055,355,359,422.66 - Step 5: Solve for x
x = 183,055,355,359,422.66/15,457,457.88 - Step 6: Final answer
x = 11,842,526.55
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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.