Finding the Fourth Proportional to 19,865,877.20, 29,791,817.40 and 7,086,798.80
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Solution
The fourth proportional to 19,865,877.20, 29,791,817.40 and 7,086,798.80 is: 10,627,701.65
Step by Step Solution
- Step 1: Write the proportion equation
19,865,877.20 : 29,791,817.40 = 7,086,798.80 : x - Step 2: Convert to fraction form
19,865,877.20/29,791,817.40 = 7,086,798.80/x - Step 3: Cross multiply
19,865,877.20x = 29,791,817.40 × 7,086,798.80 - Step 4: Simplify right side
19,865,877.20x = 211,128,615,800,139.09 - Step 5: Solve for x
x = 211,128,615,800,139.09/19,865,877.20 - Step 6: Final answer
x = 10,627,701.65
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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.