Finding the Fourth Proportional to 10,272,021.80, 15,408,032.70 and 7,286,037.80
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Solution
The fourth proportional to 10,272,021.80, 15,408,032.70 and 7,286,037.80 is: 10,929,056.70
Step by Step Solution
- Step 1: Write the proportion equation
10,272,021.80 : 15,408,032.70 = 7,286,037.80 : x - Step 2: Convert to fraction form
10,272,021.80/15,408,032.70 = 7,286,037.80/x - Step 3: Cross multiply
10,272,021.80x = 15,408,032.70 × 7,286,037.80 - Step 4: Simplify right side
10,272,021.80x = 112,263,508,675,836.05 - Step 5: Solve for x
x = 112,263,508,675,836.05/10,272,021.80 - Step 6: Final answer
x = 10,929,056.70
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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.