Finding the Fourth Proportional to 20,023,495.96, 30,185,323.57 and 18,688,737.74
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Solution
The fourth proportional to 20,023,495.96, 30,185,323.57 and 18,688,737.74 is: 28,173,181.99
Step by Step Solution
- Step 1: Write the proportion equation
20,023,495.96 : 30,185,323.57 = 18,688,737.74 : x - Step 2: Convert to fraction form
20,023,495.96/30,185,323.57 = 18,688,737.74/x - Step 3: Cross multiply
20,023,495.96x = 30,185,323.57 × 18,688,737.74 - Step 4: Simplify right side
20,023,495.96x = 564,125,595,721,307.25 - Step 5: Solve for x
x = 564,125,595,721,307.25/20,023,495.96 - Step 6: Final answer
x = 28,173,181.99
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.