Finding the Fourth Proportional to 19,919,636.20, 29,879,454.30 and 18,722,909.80
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Solution
The fourth proportional to 19,919,636.20, 29,879,454.30 and 18,722,909.80 is: 28,084,364.70
Step by Step Solution
- Step 1: Write the proportion equation
19,919,636.20 : 29,879,454.30 = 18,722,909.80 : x - Step 2: Convert to fraction form
19,919,636.20/29,879,454.30 = 18,722,909.80/x - Step 3: Cross multiply
19,919,636.20x = 29,879,454.30 × 18,722,909.80 - Step 4: Simplify right side
19,919,636.20x = 559,430,327,732,122.19 - Step 5: Solve for x
x = 559,430,327,732,122.19/19,919,636.20 - Step 6: Final answer
x = 28,084,364.70
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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.