Finding the Fourth Proportional to 28,731,045.09, 39,649,685.58 and 15,679,146.41
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Solution
The fourth proportional to 28,731,045.09, 39,649,685.58 and 15,679,146.41 is: 21,637,682.28
Step by Step Solution
- Step 1: Write the proportion equation
28,731,045.09 : 39,649,685.58 = 15,679,146.41 : x - Step 2: Convert to fraction form
28,731,045.09/39,649,685.58 = 15,679,146.41/x - Step 3: Cross multiply
28,731,045.09x = 39,649,685.58 × 15,679,146.41 - Step 4: Simplify right side
28,731,045.09x = 621,673,225,319,285.75 - Step 5: Solve for x
x = 621,673,225,319,285.75/28,731,045.09 - Step 6: Final answer
x = 21,637,682.28
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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.