Finding the Fourth Proportional to 13,142,969.60, 19,693,257.60 and 7,446,252.80
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Solution
The fourth proportional to 13,142,969.60, 19,693,257.60 and 7,446,252.80 is: 11,157,369.99
Step by Step Solution
- Step 1: Write the proportion equation
13,142,969.60 : 19,693,257.60 = 7,446,252.80 : x - Step 2: Convert to fraction form
13,142,969.60/19,693,257.60 = 7,446,252.80/x - Step 3: Cross multiply
13,142,969.60x = 19,693,257.60 × 7,446,252.80 - Step 4: Simplify right side
13,142,969.60x = 146,640,974,545,121.28 - Step 5: Solve for x
x = 146,640,974,545,121.28/13,142,969.60 - Step 6: Final answer
x = 11,157,369.99
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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.