Finding the Fourth Proportional to 12,128,193.32, 16,736,820.12 and 6,621,567.99
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Solution
The fourth proportional to 12,128,193.32, 16,736,820.12 and 6,621,567.99 is: 9,137,716.52
Step by Step Solution
- Step 1: Write the proportion equation
12,128,193.32 : 16,736,820.12 = 6,621,567.99 : x - Step 2: Convert to fraction form
12,128,193.32/16,736,820.12 = 6,621,567.99/x - Step 3: Cross multiply
12,128,193.32x = 16,736,820.12 × 6,621,567.99 - Step 4: Simplify right side
12,128,193.32x = 110,823,992,360,979.95 - Step 5: Solve for x
x = 110,823,992,360,979.95/12,128,193.32 - Step 6: Final answer
x = 9,137,716.52
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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.