Finding the Fourth Proportional to 14,471,756.40, 19,970,129.08 and 7,945,349.28
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Solution
The fourth proportional to 14,471,756.40, 19,970,129.08 and 7,945,349.28 is: 10,964,090.77
Step by Step Solution
- Step 1: Write the proportion equation
14,471,756.40 : 19,970,129.08 = 7,945,349.28 : x - Step 2: Convert to fraction form
14,471,756.40/19,970,129.08 = 7,945,349.28/x - Step 3: Cross multiply
14,471,756.40x = 19,970,129.08 × 7,945,349.28 - Step 4: Simplify right side
14,471,756.40x = 158,669,650,707,285.06 - Step 5: Solve for x
x = 158,669,650,707,285.06/14,471,756.40 - Step 6: Final answer
x = 10,964,090.77
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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.