Finding the Fourth Proportional to 13,080,962.70, 19,621,444.05 and 12,528,089.10
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Solution
The fourth proportional to 13,080,962.70, 19,621,444.05 and 12,528,089.10 is: 18,792,133.65
Step by Step Solution
- Step 1: Write the proportion equation
13,080,962.70 : 19,621,444.05 = 12,528,089.10 : x - Step 2: Convert to fraction form
13,080,962.70/19,621,444.05 = 12,528,089.10/x - Step 3: Cross multiply
13,080,962.70x = 19,621,444.05 × 12,528,089.10 - Step 4: Simplify right side
13,080,962.70x = 245,819,199,329,064.84 - Step 5: Solve for x
x = 245,819,199,329,064.84/13,080,962.70 - Step 6: Final answer
x = 18,792,133.65
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.