Finding the Fourth Proportional to 28,731,225.57, 39,649,928.61 and 15,679,325.18
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Solution
The fourth proportional to 28,731,225.57, 39,649,928.61 and 15,679,325.18 is: 21,637,925.70
Step by Step Solution
- Step 1: Write the proportion equation
28,731,225.57 : 39,649,928.61 = 15,679,325.18 : x - Step 2: Convert to fraction form
28,731,225.57/39,649,928.61 = 15,679,325.18/x - Step 3: Cross multiply
28,731,225.57x = 39,649,928.61 × 15,679,325.18 - Step 4: Simplify right side
28,731,225.57x = 621,684,124,039,975.38 - Step 5: Solve for x
x = 621,684,124,039,975.38/28,731,225.57 - Step 6: Final answer
x = 21,637,925.70
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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.