Finding the Fourth Proportional to 13,235,830.36, 18,265,889.40 and 7,355,712.30
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Solution
The fourth proportional to 13,235,830.36, 18,265,889.40 and 7,355,712.30 is: 10,151,129.45
Step by Step Solution
- Step 1: Write the proportion equation
13,235,830.36 : 18,265,889.40 = 7,355,712.30 : x - Step 2: Convert to fraction form
13,235,830.36/18,265,889.40 = 7,355,712.30/x - Step 3: Cross multiply
13,235,830.36x = 18,265,889.40 × 7,355,712.30 - Step 4: Simplify right side
13,235,830.36x = 134,358,627,330,019.61 - Step 5: Solve for x
x = 134,358,627,330,019.61/13,235,830.36 - Step 6: Final answer
x = 10,151,129.45
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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.