Finding the Fourth Proportional to 12,391,314.18, 17,086,228.35 and 8,471,708.99
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Solution
The fourth proportional to 12,391,314.18, 17,086,228.35 and 8,471,708.99 is: 11,681,533.71
Step by Step Solution
- Step 1: Write the proportion equation
12,391,314.18 : 17,086,228.35 = 8,471,708.99 : x - Step 2: Convert to fraction form
12,391,314.18/17,086,228.35 = 8,471,708.99/x - Step 3: Cross multiply
12,391,314.18x = 17,086,228.35 × 8,471,708.99 - Step 4: Simplify right side
12,391,314.18x = 144,749,554,317,887.88 - Step 5: Solve for x
x = 144,749,554,317,887.88/12,391,314.18 - Step 6: Final answer
x = 11,681,533.71
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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.