Finding the Fourth Proportional to 13,248,715.20, 19,873,072.80 and 7,186,351.20
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Solution
The fourth proportional to 13,248,715.20, 19,873,072.80 and 7,186,351.20 is: 10,779,526.80
Step by Step Solution
- Step 1: Write the proportion equation
13,248,715.20 : 19,873,072.80 = 7,186,351.20 : x - Step 2: Convert to fraction form
13,248,715.20/19,873,072.80 = 7,186,351.20/x - Step 3: Cross multiply
13,248,715.20x = 19,873,072.80 × 7,186,351.20 - Step 4: Simplify right side
13,248,715.20x = 142,814,880,563,967.38 - Step 5: Solve for x
x = 142,814,880,563,967.38/13,248,715.20 - Step 6: Final answer
x = 10,779,526.80
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1.5x scale
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.