Finding the Fourth Proportional to 20,248,648.19, 27,946,771.93 and 11,430,787.20
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Solution
The fourth proportional to 20,248,648.19, 27,946,771.93 and 11,430,787.20 is: 15,776,539.75
Step by Step Solution
- Step 1: Write the proportion equation
20,248,648.19 : 27,946,771.93 = 11,430,787.20 : x - Step 2: Convert to fraction form
20,248,648.19/27,946,771.93 = 11,430,787.20/x - Step 3: Cross multiply
20,248,648.19x = 27,946,771.93 × 11,430,787.20 - Step 4: Simplify right side
20,248,648.19x = 319,453,602,939,768.06 - Step 5: Solve for x
x = 319,453,602,939,768.06/20,248,648.19 - Step 6: Final answer
x = 15,776,539.75
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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.