Finding the Fourth Proportional to 13,913,782.42, 19,201,042.26 and 7,718,829.40
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Solution
The fourth proportional to 13,913,782.42, 19,201,042.26 and 7,718,829.40 is: 10,651,997.07
Step by Step Solution
- Step 1: Write the proportion equation
13,913,782.42 : 19,201,042.26 = 7,718,829.40 : x - Step 2: Convert to fraction form
13,913,782.42/19,201,042.26 = 7,718,829.40/x - Step 3: Cross multiply
13,913,782.42x = 19,201,042.26 × 7,718,829.40 - Step 4: Simplify right side
13,913,782.42x = 148,209,569,507,130.47 - Step 5: Solve for x
x = 148,209,569,507,130.47/13,913,782.42 - Step 6: Final answer
x = 10,651,997.07
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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.