Finding the Fourth Proportional to 14,069,189.12, 19,415,515.20 and 7,630,661.12
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Solution
The fourth proportional to 14,069,189.12, 19,415,515.20 and 7,630,661.12 is: 10,530,330.90
Step by Step Solution
- Step 1: Write the proportion equation
14,069,189.12 : 19,415,515.20 = 7,630,661.12 : x - Step 2: Convert to fraction form
14,069,189.12/19,415,515.20 = 7,630,661.12/x - Step 3: Cross multiply
14,069,189.12x = 19,415,515.20 × 7,630,661.12 - Step 4: Simplify right side
14,069,189.12x = 148,153,216,961,409.03 - Step 5: Solve for x
x = 148,153,216,961,409.03/14,069,189.12 - Step 6: Final answer
x = 10,530,330.90
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Double scale
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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.