Finding the Fourth Proportional to 28,731,197.12, 39,649,889.37 and 15,679,296.75
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Solution
The fourth proportional to 28,731,197.12, 39,649,889.37 and 15,679,296.75 is: 21,637,886.48
Step by Step Solution
- Step 1: Write the proportion equation
28,731,197.12 : 39,649,889.37 = 15,679,296.75 : x - Step 2: Convert to fraction form
28,731,197.12/39,649,889.37 = 15,679,296.75/x - Step 3: Cross multiply
28,731,197.12x = 39,649,889.37 × 15,679,296.75 - Step 4: Simplify right side
28,731,197.12x = 621,682,381,536,900.50 - Step 5: Solve for x
x = 621,682,381,536,900.50/28,731,197.12 - Step 6: Final answer
x = 21,637,886.48
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.