Finding the Fourth Proportional to 13,309,251.36, 18,366,822.12 and 7,197,679.92
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Solution
The fourth proportional to 13,309,251.36, 18,366,822.12 and 7,197,679.92 is: 9,932,828.17
Step by Step Solution
- Step 1: Write the proportion equation
13,309,251.36 : 18,366,822.12 = 7,197,679.92 : x - Step 2: Convert to fraction form
13,309,251.36/18,366,822.12 = 7,197,679.92/x - Step 3: Cross multiply
13,309,251.36x = 18,366,822.12 × 7,197,679.92 - Step 4: Simplify right side
13,309,251.36x = 132,198,506,767,335.84 - Step 5: Solve for x
x = 132,198,506,767,335.84/13,309,251.36 - Step 6: Final answer
x = 9,932,828.17
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1.5x scale
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.