Finding the Fourth Proportional to 11,378,635.16, 15,689,099.58 and 9,196,430.36
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Solution
The fourth proportional to 11,378,635.16, 15,689,099.58 and 9,196,430.36 is: 12,680,230.07
Step by Step Solution
- Step 1: Write the proportion equation
11,378,635.16 : 15,689,099.58 = 9,196,430.36 : x - Step 2: Convert to fraction form
11,378,635.16/15,689,099.58 = 9,196,430.36/x - Step 3: Cross multiply
11,378,635.16x = 15,689,099.58 × 9,196,430.36 - Step 4: Simplify right side
11,378,635.16x = 144,283,711,698,575.25 - Step 5: Solve for x
x = 144,283,711,698,575.25/11,378,635.16 - Step 6: Final answer
x = 12,680,230.07
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1.5x scale
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.