Finding the Fourth Proportional to 19,909,615.80, 29,864,423.70 and 9,831,919.80
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Solution
The fourth proportional to 19,909,615.80, 29,864,423.70 and 9,831,919.80 is: 14,747,879.70
Step by Step Solution
- Step 1: Write the proportion equation
19,909,615.80 : 29,864,423.70 = 9,831,919.80 : x - Step 2: Convert to fraction form
19,909,615.80/29,864,423.70 = 9,831,919.80/x - Step 3: Cross multiply
19,909,615.80x = 29,864,423.70 × 9,831,919.80 - Step 4: Simplify right side
19,909,615.80x = 293,624,618,691,619.25 - Step 5: Solve for x
x = 293,624,618,691,619.25/19,909,615.80 - Step 6: Final answer
x = 14,747,879.70
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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.