Finding the Fourth Proportional to 19,378,749.60, 29,068,124.40 and 13,639,186.80
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Solution
The fourth proportional to 19,378,749.60, 29,068,124.40 and 13,639,186.80 is: 20,458,780.20
Step by Step Solution
- Step 1: Write the proportion equation
19,378,749.60 : 29,068,124.40 = 13,639,186.80 : x - Step 2: Convert to fraction form
19,378,749.60/29,068,124.40 = 13,639,186.80/x - Step 3: Cross multiply
19,378,749.60x = 29,068,124.40 × 13,639,186.80 - Step 4: Simplify right side
19,378,749.60x = 396,465,578,617,237.94 - Step 5: Solve for x
x = 396,465,578,617,237.94/19,378,749.60 - Step 6: Final answer
x = 20,458,780.20
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1.5x scale
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.