Finding the Fourth Proportional to 13,489,823.16, 18,616,400.64 and 7,378,251.12
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Solution
The fourth proportional to 13,489,823.16, 18,616,400.64 and 7,378,251.12 is: 10,182,229.76
Step by Step Solution
- Step 1: Write the proportion equation
13,489,823.16 : 18,616,400.64 = 7,378,251.12 : x - Step 2: Convert to fraction form
13,489,823.16/18,616,400.64 = 7,378,251.12/x - Step 3: Cross multiply
13,489,823.16x = 18,616,400.64 × 7,378,251.12 - Step 4: Simplify right side
13,489,823.16x = 137,356,478,872,448.72 - Step 5: Solve for x
x = 137,356,478,872,448.72/13,489,823.16 - Step 6: Final answer
x = 10,182,229.76
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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.