Finding the Fourth Proportional to 19,668,935.80, 29,503,403.70 and 13,244,404.60
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Solution
The fourth proportional to 19,668,935.80, 29,503,403.70 and 13,244,404.60 is: 19,866,606.90
Step by Step Solution
- Step 1: Write the proportion equation
19,668,935.80 : 29,503,403.70 = 13,244,404.60 : x - Step 2: Convert to fraction form
19,668,935.80/29,503,403.70 = 13,244,404.60/x - Step 3: Cross multiply
19,668,935.80x = 29,503,403.70 × 13,244,404.60 - Step 4: Simplify right side
19,668,935.80x = 390,755,015,679,937 - Step 5: Solve for x
x = 390,755,015,679,937/19,668,935.80 - Step 6: Final answer
x = 19,866,606.90
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1.5x scale
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.