Finding the Fourth Proportional to 28,688,406.39, 39,588,845.99 and 15,635,384.37
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Solution
The fourth proportional to 28,688,406.39, 39,588,845.99 and 15,635,384.37 is: 21,576,201.04
Step by Step Solution
- Step 1: Write the proportion equation
28,688,406.39 : 39,588,845.99 = 15,635,384.37 : x - Step 2: Convert to fraction form
28,688,406.39/39,588,845.99 = 15,635,384.37/x - Step 3: Cross multiply
28,688,406.39x = 39,588,845.99 × 15,635,384.37 - Step 4: Simplify right side
28,688,406.39x = 618,986,823,740,206.25 - Step 5: Solve for x
x = 618,986,823,740,206.25/28,688,406.39 - Step 6: Final answer
x = 21,576,201.04
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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.