Finding the Fourth Proportional to 19,570,639.70, 29,355,959.55 and 15,539,561.30
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Solution
The fourth proportional to 19,570,639.70, 29,355,959.55 and 15,539,561.30 is: 23,309,341.95
Step by Step Solution
- Step 1: Write the proportion equation
19,570,639.70 : 29,355,959.55 = 15,539,561.30 : x - Step 2: Convert to fraction form
19,570,639.70/29,355,959.55 = 15,539,561.30/x - Step 3: Cross multiply
19,570,639.70x = 29,355,959.55 × 15,539,561.30 - Step 4: Simplify right side
19,570,639.70x = 456,178,732,947,545.44 - Step 5: Solve for x
x = 456,178,732,947,545.44/19,570,639.70 - Step 6: Final answer
x = 23,309,341.95
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.