Finding the Fourth Proportional to 13,518,733.91, 18,656,599.88 and 7,719,378.53
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Solution
The fourth proportional to 13,518,733.91, 18,656,599.88 and 7,719,378.53 is: 10,653,168.96
Step by Step Solution
- Step 1: Write the proportion equation
13,518,733.91 : 18,656,599.88 = 7,719,378.53 : x - Step 2: Convert to fraction form
13,518,733.91/18,656,599.88 = 7,719,378.53/x - Step 3: Cross multiply
13,518,733.91x = 18,656,599.88 × 7,719,378.53 - Step 4: Simplify right side
13,518,733.91x = 144,017,356,517,875.69 - Step 5: Solve for x
x = 144,017,356,517,875.69/13,518,733.91 - Step 6: Final answer
x = 10,653,168.96
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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.