Finding the Fourth Proportional to 20,464,739.68, 28,241,430.96 and 11,297,457.76
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Solution
The fourth proportional to 20,464,739.68, 28,241,430.96 and 11,297,457.76 is: 15,590,541.50
Step by Step Solution
- Step 1: Write the proportion equation
20,464,739.68 : 28,241,430.96 = 11,297,457.76 : x - Step 2: Convert to fraction form
20,464,739.68/28,241,430.96 = 11,297,457.76/x - Step 3: Cross multiply
20,464,739.68x = 28,241,430.96 × 11,297,457.76 - Step 4: Simplify right side
20,464,739.68x = 319,056,373,352,556.25 - Step 5: Solve for x
x = 319,056,373,352,556.25/20,464,739.68 - Step 6: Final answer
x = 15,590,541.50
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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.