Finding the Fourth Proportional to 28,773,816.24, 39,707,397.18 and 15,720,794.22
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Solution
The fourth proportional to 28,773,816.24, 39,707,397.18 and 15,720,794.22 is: 21,694,439.66
Step by Step Solution
- Step 1: Write the proportion equation
28,773,816.24 : 39,707,397.18 = 15,720,794.22 : x - Step 2: Convert to fraction form
28,773,816.24/39,707,397.18 = 15,720,794.22/x - Step 3: Cross multiply
28,773,816.24x = 39,707,397.18 × 15,720,794.22 - Step 4: Simplify right side
28,773,816.24x = 624,231,820,078,588.38 - Step 5: Solve for x
x = 624,231,820,078,588.38/28,773,816.24 - Step 6: Final answer
x = 21,694,439.66
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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.