Finding the Fourth Proportional to 11,239,383.70, 16,859,075.55 and 8,405,031.70
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Solution
The fourth proportional to 11,239,383.70, 16,859,075.55 and 8,405,031.70 is: 12,607,547.55
Step by Step Solution
- Step 1: Write the proportion equation
11,239,383.70 : 16,859,075.55 = 8,405,031.70 : x - Step 2: Convert to fraction form
11,239,383.70/16,859,075.55 = 8,405,031.70/x - Step 3: Cross multiply
11,239,383.70x = 16,859,075.55 × 8,405,031.70 - Step 4: Simplify right side
11,239,383.70x = 141,701,064,430,444.94 - Step 5: Solve for x
x = 141,701,064,430,444.94/11,239,383.70 - Step 6: Final answer
x = 12,607,547.55
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1.5x scale
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.