Finding the Fourth Proportional to 12,912,863.99, 17,819,177.36 and 7,402,288.19
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Solution
The fourth proportional to 12,912,863.99, 17,819,177.36 and 7,402,288.19 is: 10,214,828.11
Step by Step Solution
- Step 1: Write the proportion equation
12,912,863.99 : 17,819,177.36 = 7,402,288.19 : x - Step 2: Convert to fraction form
12,912,863.99/17,819,177.36 = 7,402,288.19/x - Step 3: Cross multiply
12,912,863.99x = 17,819,177.36 × 7,402,288.19 - Step 4: Simplify right side
12,912,863.99x = 131,902,686,001,336.05 - Step 5: Solve for x
x = 131,902,686,001,336.05/12,912,863.99 - Step 6: Final answer
x = 10,214,828.11
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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.