Finding the Fourth Proportional to 13,038,979.20, 19,558,468.80 and 9,679,747.20
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Solution
The fourth proportional to 13,038,979.20, 19,558,468.80 and 9,679,747.20 is: 14,519,620.80
Step by Step Solution
- Step 1: Write the proportion equation
13,038,979.20 : 19,558,468.80 = 9,679,747.20 : x - Step 2: Convert to fraction form
13,038,979.20/19,558,468.80 = 9,679,747.20/x - Step 3: Cross multiply
13,038,979.20x = 19,558,468.80 × 9,679,747.20 - Step 4: Simplify right side
13,038,979.20x = 189,321,033,603,087.34 - Step 5: Solve for x
x = 189,321,033,603,087.34/13,038,979.20 - Step 6: Final answer
x = 14,519,620.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.