Finding the Fourth Proportional to 13,188,117.60, 19,782,176.40 and 11,886,415.20
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Solution
The fourth proportional to 13,188,117.60, 19,782,176.40 and 11,886,415.20 is: 17,829,622.80
Step by Step Solution
- Step 1: Write the proportion equation
13,188,117.60 : 19,782,176.40 = 11,886,415.20 : x - Step 2: Convert to fraction form
13,188,117.60/19,782,176.40 = 11,886,415.20/x - Step 3: Cross multiply
13,188,117.60x = 19,782,176.40 × 11,886,415.20 - Step 4: Simplify right side
13,188,117.60x = 235,139,162,250,041.25 - Step 5: Solve for x
x = 235,139,162,250,041.25/13,188,117.60 - Step 6: Final answer
x = 17,829,622.80
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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.