Finding the Fourth Proportional to 21,651,258.98, 29,878,727.05 and 12,949,431.42
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Solution
The fourth proportional to 21,651,258.98, 29,878,727.05 and 12,949,431.42 is: 17,870,209.17
Step by Step Solution
- Step 1: Write the proportion equation
21,651,258.98 : 29,878,727.05 = 12,949,431.42 : x - Step 2: Convert to fraction form
21,651,258.98/29,878,727.05 = 12,949,431.42/x - Step 3: Cross multiply
21,651,258.98x = 29,878,727.05 × 12,949,431.42 - Step 4: Simplify right side
21,651,258.98x = 386,912,526,850,873.94 - Step 5: Solve for x
x = 386,912,526,850,873.94/21,651,258.98 - Step 6: Final answer
x = 17,870,209.17
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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.