Finding the Fourth Proportional to 20,779,567.93, 28,675,842.60 and 11,612,210.68
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Solution
The fourth proportional to 20,779,567.93, 28,675,842.60 and 11,612,210.68 is: 16,024,872.45
Step by Step Solution
- Step 1: Write the proportion equation
20,779,567.93 : 28,675,842.60 = 11,612,210.68 : x - Step 2: Convert to fraction form
20,779,567.93/28,675,842.60 = 11,612,210.68/x - Step 3: Cross multiply
20,779,567.93x = 28,675,842.60 × 11,612,210.68 - Step 4: Simplify right side
20,779,567.93x = 332,989,925,697,719 - Step 5: Solve for x
x = 332,989,925,697,719/20,779,567.93 - Step 6: Final answer
x = 16,024,872.45
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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.