Finding the Fourth Proportional to 13,698,220.63, 18,903,497.30 and 7,896,974.71
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Solution
The fourth proportional to 13,698,220.63, 18,903,497.30 and 7,896,974.71 is: 10,897,797.90
Step by Step Solution
- Step 1: Write the proportion equation
13,698,220.63 : 18,903,497.30 = 7,896,974.71 : x - Step 2: Convert to fraction form
13,698,220.63/18,903,497.30 = 7,896,974.71/x - Step 3: Cross multiply
13,698,220.63x = 18,903,497.30 × 7,896,974.71 - Step 4: Simplify right side
13,698,220.63x = 149,280,440,069,168.44 - Step 5: Solve for x
x = 149,280,440,069,168.44/13,698,220.63 - Step 6: Final answer
x = 10,897,797.90
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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.