Finding the Fourth Proportional to 28,731,228.63, 39,649,932.84 and 15,679,328.25
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Solution
The fourth proportional to 28,731,228.63, 39,649,932.84 and 15,679,328.25 is: 21,637,929.94
Step by Step Solution
- Step 1: Write the proportion equation
28,731,228.63 : 39,649,932.84 = 15,679,328.25 : x - Step 2: Convert to fraction form
28,731,228.63/39,649,932.84 = 15,679,328.25/x - Step 3: Cross multiply
28,731,228.63x = 39,649,932.84 × 15,679,328.25 - Step 4: Simplify right side
28,731,228.63x = 621,684,312,088,814.75 - Step 5: Solve for x
x = 621,684,312,088,814.75/28,731,228.63 - Step 6: Final answer
x = 21,637,929.94
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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.