Finding the Fourth Proportional to 13,089,908.75, 18,064,894.55 and 7,209,541.76
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Solution
The fourth proportional to 13,089,908.75, 18,064,894.55 and 7,209,541.76 is: 9,949,619.52
Step by Step Solution
- Step 1: Write the proportion equation
13,089,908.75 : 18,064,894.55 = 7,209,541.76 : x - Step 2: Convert to fraction form
13,089,908.75/18,064,894.55 = 7,209,541.76/x - Step 3: Cross multiply
13,089,908.75x = 18,064,894.55 × 7,209,541.76 - Step 4: Simplify right side
13,089,908.75x = 130,239,611,521,849.23 - Step 5: Solve for x
x = 130,239,611,521,849.23/13,089,908.75 - Step 6: Final answer
x = 9,949,619.52
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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.