Finding the Fourth Proportional to 28,679,139.09, 39,576,712.73 and 15,626,505.87
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Solution
The fourth proportional to 28,679,139.09, 39,576,712.73 and 15,626,505.87 is: 21,564,306.09
Step by Step Solution
- Step 1: Write the proportion equation
28,679,139.09 : 39,576,712.73 = 15,626,505.87 : x - Step 2: Convert to fraction form
28,679,139.09/39,576,712.73 = 15,626,505.87/x - Step 3: Cross multiply
28,679,139.09x = 39,576,712.73 × 15,626,505.87 - Step 4: Simplify right side
28,679,139.09x = 618,445,733,712,516.12 - Step 5: Solve for x
x = 618,445,733,712,516.12/28,679,139.09 - Step 6: Final answer
x = 21,564,306.09
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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.