Finding the Fourth Proportional to 28,340,532.71, 39,108,677.09 and 15,782,235.20
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Solution
The fourth proportional to 28,340,532.71, 39,108,677.09 and 15,782,235.20 is: 21,778,784.00
Step by Step Solution
- Step 1: Write the proportion equation
28,340,532.71 : 39,108,677.09 = 15,782,235.20 : x - Step 2: Convert to fraction form
28,340,532.71/39,108,677.09 = 15,782,235.20/x - Step 3: Cross multiply
28,340,532.71x = 39,108,677.09 × 15,782,235.20 - Step 4: Simplify right side
28,340,532.71x = 617,222,340,195,231.62 - Step 5: Solve for x
x = 617,222,340,195,231.62/28,340,532.71 - Step 6: Final answer
x = 21,778,784.00
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1.5x scale
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.