Finding the Fourth Proportional to 21,257,276.91, 29,324,938.84 and 12,549,616.12
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Solution
The fourth proportional to 21,257,276.91, 29,324,938.84 and 12,549,616.12 is: 17,312,505.58
Step by Step Solution
- Step 1: Write the proportion equation
21,257,276.91 : 29,324,938.84 = 12,549,616.12 : x - Step 2: Convert to fraction form
21,257,276.91/29,324,938.84 = 12,549,616.12/x - Step 3: Cross multiply
21,257,276.91x = 29,324,938.84 × 12,549,616.12 - Step 4: Simplify right side
21,257,276.91x = 368,016,725,184,478.06 - Step 5: Solve for x
x = 368,016,725,184,478.06/21,257,276.91 - Step 6: Final answer
x = 17,312,505.58
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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.