Finding the Fourth Proportional to 19,760,472.72, 29,674,629.75 and 12,128,930.76
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Solution
The fourth proportional to 19,760,472.72, 29,674,629.75 and 12,128,930.76 is: 18,214,216.57
Step by Step Solution
- Step 1: Write the proportion equation
19,760,472.72 : 29,674,629.75 = 12,128,930.76 : x - Step 2: Convert to fraction form
19,760,472.72/29,674,629.75 = 12,128,930.76/x - Step 3: Cross multiply
19,760,472.72x = 29,674,629.75 × 12,128,930.76 - Step 4: Simplify right side
19,760,472.72x = 359,921,529,566,386.12 - Step 5: Solve for x
x = 359,921,529,566,386.12/19,760,472.72 - Step 6: Final answer
x = 18,214,216.57
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.