Finding the Fourth Proportional to 15,003,941.97, 20,705,309.99 and 8,128,407.63
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Solution
The fourth proportional to 15,003,941.97, 20,705,309.99 and 8,128,407.63 is: 11,217,132.14
Step by Step Solution
- Step 1: Write the proportion equation
15,003,941.97 : 20,705,309.99 = 8,128,407.63 : x - Step 2: Convert to fraction form
15,003,941.97/20,705,309.99 = 8,128,407.63/x - Step 3: Cross multiply
15,003,941.97x = 20,705,309.99 × 8,128,407.63 - Step 4: Simplify right side
15,003,941.97x = 168,301,199,663,589.19 - Step 5: Solve for x
x = 168,301,199,663,589.19/15,003,941.97 - Step 6: Final answer
x = 11,217,132.14
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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.