Finding the Fourth Proportional to 13,731,955.52, 18,950,745.12 and 7,620,434.24
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Solution
The fourth proportional to 13,731,955.52, 18,950,745.12 and 7,620,434.24 is: 10,516,558.02
Step by Step Solution
- Step 1: Write the proportion equation
13,731,955.52 : 18,950,745.12 = 7,620,434.24 : x - Step 2: Convert to fraction form
13,731,955.52/18,950,745.12 = 7,620,434.24/x - Step 3: Cross multiply
13,731,955.52x = 18,950,745.12 × 7,620,434.24 - Step 4: Simplify right side
13,731,955.52x = 144,412,906,985,960.91 - Step 5: Solve for x
x = 144,412,906,985,960.91/13,731,955.52 - Step 6: Final answer
x = 10,516,558.02
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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.