Finding the Fourth Proportional to 19,730,985.40, 29,596,478.10 and 12,574,246.60
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Solution
The fourth proportional to 19,730,985.40, 29,596,478.10 and 12,574,246.60 is: 18,861,369.90
Step by Step Solution
- Step 1: Write the proportion equation
19,730,985.40 : 29,596,478.10 = 12,574,246.60 : x - Step 2: Convert to fraction form
19,730,985.40/29,596,478.10 = 12,574,246.60/x - Step 3: Cross multiply
19,730,985.40x = 29,596,478.10 × 12,574,246.60 - Step 4: Simplify right side
19,730,985.40x = 372,153,414,120,899.44 - Step 5: Solve for x
x = 372,153,414,120,899.44/19,730,985.40 - Step 6: Final answer
x = 18,861,369.90
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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.