Finding the Fourth Proportional to 28,425,366.21, 39,227,122.76 and 15,372,624.86
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Solution
The fourth proportional to 28,425,366.21, 39,227,122.76 and 15,372,624.86 is: 21,214,285.79
Step by Step Solution
- Step 1: Write the proportion equation
28,425,366.21 : 39,227,122.76 = 15,372,624.86 : x - Step 2: Convert to fraction form
28,425,366.21/39,227,122.76 = 15,372,624.86/x - Step 3: Cross multiply
28,425,366.21x = 39,227,122.76 × 15,372,624.86 - Step 4: Simplify right side
28,425,366.21x = 603,023,842,526,647.75 - Step 5: Solve for x
x = 603,023,842,526,647.75/28,425,366.21 - Step 6: Final answer
x = 21,214,285.79
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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.