Finding the Fourth Proportional to 20,130,152.74, 27,779,978.08 and 11,190,102.42
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Solution
The fourth proportional to 20,130,152.74, 27,779,978.08 and 11,190,102.42 is: 15,442,545.52
Step by Step Solution
- Step 1: Write the proportion equation
20,130,152.74 : 27,779,978.08 = 11,190,102.42 : x - Step 2: Convert to fraction form
20,130,152.74/27,779,978.08 = 11,190,102.42/x - Step 3: Cross multiply
20,130,152.74x = 27,779,978.08 × 11,190,102.42 - Step 4: Simplify right side
20,130,152.74x = 310,860,799,940,554.94 - Step 5: Solve for x
x = 310,860,799,940,554.94/20,130,152.74 - Step 6: Final answer
x = 15,442,545.52
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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.