Finding the Fourth Proportional to 20,130,148.74, 27,779,972.55 and 11,190,098.42
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Solution
The fourth proportional to 20,130,148.74, 27,779,972.55 and 11,190,098.42 is: 15,442,539.99
Step by Step Solution
- Step 1: Write the proportion equation
20,130,148.74 : 27,779,972.55 = 11,190,098.42 : x - Step 2: Convert to fraction form
20,130,148.74/27,779,972.55 = 11,190,098.42/x - Step 3: Cross multiply
20,130,148.74x = 27,779,972.55 × 11,190,098.42 - Step 4: Simplify right side
20,130,148.74x = 310,860,626,939,398.38 - Step 5: Solve for x
x = 310,860,626,939,398.38/20,130,148.74 - Step 6: Final answer
x = 15,442,539.99
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1.5x scale
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.