Finding the Fourth Proportional to 20,765,627.58, 28,656,397.62 and 11,473,168.68
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Solution
The fourth proportional to 20,765,627.58, 28,656,397.62 and 11,473,168.68 is: 15,832,879.71
Step by Step Solution
- Step 1: Write the proportion equation
20,765,627.58 : 28,656,397.62 = 11,473,168.68 : x - Step 2: Convert to fraction form
20,765,627.58/28,656,397.62 = 11,473,168.68/x - Step 3: Cross multiply
20,765,627.58x = 28,656,397.62 × 11,473,168.68 - Step 4: Simplify right side
20,765,627.58x = 328,779,683,655,410.56 - Step 5: Solve for x
x = 328,779,683,655,410.56/20,765,627.58 - Step 6: Final answer
x = 15,832,879.71
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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.