Finding the Fourth Proportional to 19,668,644.20, 29,502,966.30 and 18,156,989.80
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Solution
The fourth proportional to 19,668,644.20, 29,502,966.30 and 18,156,989.80 is: 27,235,484.70
Step by Step Solution
- Step 1: Write the proportion equation
19,668,644.20 : 29,502,966.30 = 18,156,989.80 : x - Step 2: Convert to fraction form
19,668,644.20/29,502,966.30 = 18,156,989.80/x - Step 3: Cross multiply
19,668,644.20x = 29,502,966.30 × 18,156,989.80 - Step 4: Simplify right side
19,668,644.20x = 535,685,058,178,843.75 - Step 5: Solve for x
x = 535,685,058,178,843.75/19,668,644.20 - Step 6: Final answer
x = 27,235,484.70
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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.