Finding the Fourth Proportional to 20,538,963.84, 28,344,202.56 and 11,246,925.44
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Solution
The fourth proportional to 20,538,963.84, 28,344,202.56 and 11,246,925.44 is: 15,520,993.92
Step by Step Solution
- Step 1: Write the proportion equation
20,538,963.84 : 28,344,202.56 = 11,246,925.44 : x - Step 2: Convert to fraction form
20,538,963.84/28,344,202.56 = 11,246,925.44/x - Step 3: Cross multiply
20,538,963.84x = 28,344,202.56 × 11,246,925.44 - Step 4: Simplify right side
20,538,963.84x = 318,785,132,848,577.12 - Step 5: Solve for x
x = 318,785,132,848,577.12/20,538,963.84 - Step 6: Final answer
x = 15,520,993.92
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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.