Finding the Fourth Proportional to 13,286,811.60, 18,335,799.90 and 7,175,239.56
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Solution
The fourth proportional to 13,286,811.60, 18,335,799.90 and 7,175,239.56 is: 9,901,830.53
Step by Step Solution
- Step 1: Write the proportion equation
13,286,811.60 : 18,335,799.90 = 7,175,239.56 : x - Step 2: Convert to fraction form
13,286,811.60/18,335,799.90 = 7,175,239.56/x - Step 3: Cross multiply
13,286,811.60x = 18,335,799.90 × 7,175,239.56 - Step 4: Simplify right side
13,286,811.60x = 131,563,756,806,724.03 - Step 5: Solve for x
x = 131,563,756,806,724.03/13,286,811.60 - Step 6: Final answer
x = 9,901,830.53
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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.