Finding the Fourth Proportional to 12,120,988.76, 16,727,317.74 and 6,614,718.27
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Solution
The fourth proportional to 12,120,988.76, 16,727,317.74 and 6,614,718.27 is: 9,128,503.99
Step by Step Solution
- Step 1: Write the proportion equation
12,120,988.76 : 16,727,317.74 = 6,614,718.27 : x - Step 2: Convert to fraction form
12,120,988.76/16,727,317.74 = 6,614,718.27/x - Step 3: Cross multiply
12,120,988.76x = 16,727,317.74 × 6,614,718.27 - Step 4: Simplify right side
12,120,988.76x = 110,646,494,262,873.11 - Step 5: Solve for x
x = 110,646,494,262,873.11/12,120,988.76 - Step 6: Final answer
x = 9,128,503.99
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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.