Finding the Fourth Proportional to 11,153,485.20, 16,730,227.80 and 8,319,133.20
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Solution
The fourth proportional to 11,153,485.20, 16,730,227.80 and 8,319,133.20 is: 12,478,699.80
Step by Step Solution
- Step 1: Write the proportion equation
11,153,485.20 : 16,730,227.80 = 8,319,133.20 : x - Step 2: Convert to fraction form
11,153,485.20/16,730,227.80 = 8,319,133.20/x - Step 3: Cross multiply
11,153,485.20x = 16,730,227.80 × 8,319,133.20 - Step 4: Simplify right side
11,153,485.20x = 139,180,993,534,542.97 - Step 5: Solve for x
x = 139,180,993,534,542.97/11,153,485.20 - Step 6: Final answer
x = 12,478,699.80
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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.