Finding the Fourth Proportional to 13,130,404.24, 18,122,981.16 and 7,699,645.84
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Solution
The fourth proportional to 13,130,404.24, 18,122,981.16 and 7,699,645.84 is: 10,627,284.12
Step by Step Solution
- Step 1: Write the proportion equation
13,130,404.24 : 18,122,981.16 = 7,699,645.84 : x - Step 2: Convert to fraction form
13,130,404.24/18,122,981.16 = 7,699,645.84/x - Step 3: Cross multiply
13,130,404.24x = 18,122,981.16 × 7,699,645.84 - Step 4: Simplify right side
13,130,404.24x = 139,540,536,496,992.38 - Step 5: Solve for x
x = 139,540,536,496,992.38/13,130,404.24 - Step 6: Final answer
x = 10,627,284.12
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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.