Finding the Fourth Proportional to 13,507,865.17, 18,640,720.00 and 7,312,747.99
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Solution
The fourth proportional to 13,507,865.17, 18,640,720.00 and 7,312,747.99 is: 10,091,519.72
Step by Step Solution
- Step 1: Write the proportion equation
13,507,865.17 : 18,640,720.00 = 7,312,747.99 : x - Step 2: Convert to fraction form
13,507,865.17/18,640,720.00 = 7,312,747.99/x - Step 3: Cross multiply
13,507,865.17x = 18,640,720.00 × 7,312,747.99 - Step 4: Simplify right side
13,507,865.17x = 136,314,887,668,509.08 - Step 5: Solve for x
x = 136,314,887,668,509.08/13,507,865.17 - Step 6: Final answer
x = 10,091,519.72
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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.