Finding the Fourth Proportional to 19,898.46, 27,470.34 and 13,558.59
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Solution
The fourth proportional to 19,898.46, 27,470.34 and 13,558.59 is: 18,717.99
Step by Step Solution
- Step 1: Write the proportion equation
19,898.46 : 27,470.34 = 13,558.59 : x - Step 2: Convert to fraction form
19,898.46/27,470.34 = 13,558.59/x - Step 3: Cross multiply
19,898.46x = 27,470.34 × 13,558.59 - Step 4: Simplify right side
19,898.46x = 372,459,077.22 - Step 5: Solve for x
x = 372,459,077.22/19,898.46 - Step 6: Final answer
x = 18,717.99
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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.